Why DALY BMS' are so popular? Exactly, I don't know either.

[@stoptheirlies]

Andy, the BMS does not charge the cells through the small leads, it discharges them. When a cell hits 3.6v it will keep discharging it until the rest catch up. Your charger is across them all and is series charging them all same current in all unless steered to ground by the bms lead

[@jeffchuang4048]

I saw this video, you were missing the NTC temperature sensor, that is the reason the BMS doesn't working right way.

[@solargirl7161]

This guy is lost

[@bleedingchrome]

He doesnt think he needs it

[@Oxyandy]

Not called balance leads - sensing leads because this is a Smart BMS not a specific Balancer.. Temperature sensor NTC must be connected. You don't pair Bluetooth just click.. The button wakes up the BMS when not charging.. Balance should be set to begin at 3.2 and set to 50mv..

[@stark_energy]

I first buy Daly to replace my JBD, I do notice the difference, my big JBD has a very good balancer that is still working when cable is disconnected from load & solar controller. Daly doesn't do that, even there is clearly words "with balancer", it doesn't balance passively when disconnected, it does so a little by little when charging & discharging. I don't know the precise how Daly did that. But nearly all are balanced except one battery that is higher and one that is lower after several days of use. The most important thing that Daly featured is its charging protection, it strictly limits below 3.65v for all cells by pumping up and down a little, stopping current from solar controller for few seconds then opening it up again. This doesn't happen in JBD as JBD allows my cell to be over 3.7 for a while before disconnected, this is not good for health in long term. That is why for those who favors health/longevity of LiFePo4 battery instead of fast balancing & fast charging, they should choose Daly.

[@mvhassallfree1031]

I've had a Daly 4S 250a BMS connected to my 500a Sinopoly cells in my boat now for almost 12 months and it has worked flawlessly, I did however top balance my cells first

[@windpowered7771]

@@FullyChargedZone 👍

[@intrestedineverything]

@@FullyChargedZone Awesome☀️🔋

[@intrestedineverything]

Nice👍

[@WillProwse]

Yeah I've run them for years without an issue. All my packs have pulled full capacity years later.

[@windpowered7771]

@@WillProwse I have mo issues either

[@pete9501]

I think you need to do two things. Drop the start balance parameter to 3.2v so it start at a much lower voltage. Next discharge the battery right down and then charge up so the BMS has a chance to balance the cells. Might take a couple of goes. The BMS will switch off after 3600 seconds on your current setting. This can be upped to 7200 which is much longer and I notice the BMS does balance even when the supply power is cut for a while. 7200 might be a permanent on setting, haven't worked this out yet. Finally the cycle count doesn't work with shallow charges and discharges. I don't know what Daly use for a "cycle", another query still to be worked out. However, my Daly 150 has worked all summer and supplied all the power we need on board the yacht to run the electrics and the inverter for the kettle, toaster and induction hub. We see a difference of 0.001v between the cells after it has been charged for a while but not reached 100%. Perhaps the larger cells help. Its a 120Ah battery.

[@OffGridGarageAustralia]

If I start balancing at 3.2V, would that not balance all 4 cells with 30mA all the time while charging? What would be the difference to not balancing at all??? With that, I only lower the charge current for each cell by 30mA. All the time. That makes no sense at all in my opinion.

[@pete9501]

@@OffGridGarageAustralia Well, I can't answer that, all I can say it what is working for me. I see the BMS balancing the cells as its charging through the range and it results in a very small delta which does change but finishes in tiny percentages of a volt. Perhaps it s a time thing so from a low voltage it has the power on and the time to keep the cells balanced. It may not be perfect, but it is good enough for my needs. Perhaps we will look back in years to come and say wow, weren't those BMSs crude, but they enabled at lot of folk to use LFP at a cost effective price and a system that worked.

[@redhotbits]

@@OffGridGarageAustralia i think your logic is very good and you explain it perfectly clear

[@rogerandlyndabeall3840]

@@pete9501 I have three daly 250a fot two years now, flawless. and they are not programmable, they look after the battery and have never let the cells go over parameter. When discharging the higher volt cells give out more watts to eventually balance themselves

[@pete9501]

@@rogerandlyndabeall3840 What do you mean "not programmable? You can alter just about every setting you need to, or are yours the older non BT models?

[@WillProwse]

Daly bms is popular because a few years back, it's all we had. Besides cheaper ones on eBay that failed the moment you connected an inverter. No one made bms available back then besides batrium and Orion. Oh there were a couple others available, but very expensive. We are talking 1000$ or more for a BMS. I like the older "dumb" Daly bms models. I have 20. Never destroyed one and they work great. The Daly "smart BMS" is total garbage. I've seen so many posts on the forum of people bashing that BMS, that I will never touch it. And that company is a pain to deal with. I've emailed them. They give half answers and don't understand their own products. Anyways, that's why people like some Daly bms. The cheap ones work. That's about it.

[@OffGridGarageAustralia]

Thanks for sharing, Will. That makes totally sense. And they are red! I personally don't like the dumb ones, because the cut-off for low and high voltages are usually a bit too high or low and you have no control over it. On the other hand r BMS just triggers and disconnect the battery if the charge controller fails of the load first not disconnect. So pretty much never. A BMS is just the last resort before something goes terribly wrong with that battery.

[@WillProwse]

@@OffGridGarageAustralia yes agreed! Absolutely 😄

[@immortalsofar5314]

Well, whadya know? It sounds like my being a cheapskate has paid off! My project has had a limited budget (an entire van conversion) from the start so I originally had to get the cheap stuff before progressing to the "best budget" stuff. I figured I could add monitors to the circuits later on so just to let the BMS do its job and I already have SSRs to isolate the battery/charger so I figured that so long as it's balanced, there's nothing the "smart" version can do that I can't add myself later and be in full control of it.

[@SydRV7A]

I think you are being a bit hard on Daly. They are resold here in Australia and supported by some good companies with humans you can speak to. You actually get a warranty worth something, as opposed to dealing with Aliexpress and "ship it back here" so we can check it, out of action for 6 weeks rubbish. When I purchased my 4S unit it came with a USB stick of software and instructions. They are a good (low cost) product for battery market for RVs and to integrate into DIY battery packs. They support Bluetooth and the Android app is fairly good. By default they go to sleep until they receive a charging current -makes sense for the target market. This can be turned off and a "reset" switch added.

[@bleedingchrome]

More like he doesnt know what hes talking about

[@jonirons8100]

My experience with Daly was ok. Installed, started bms fine, app worked ok on the phone. A bit of guesswork/sleuthwork was needed to get the Windows app going, and I've found I never use it anyway. The various parameters on the app were pretty self explanatory, so never really needed the manual. It's been working flawlessly, and top balances within 20mV without fuss.

[@jonirons8100]

balanced open start voltage = 3.2V balanced open diff voltage = 0.020V and it just worked - I guess from other comments probably only when it's charging. It's not balancing now because it's discharging but max difference is 0.011V.

[@russkubes]

"Please contact customer service instead of welding" sounds like a good warning label to put on every product, lol.

[@kwalstad9754]

Andy, I use the 250 amp Daly on my DIY 280 ah batteries. To start with they would not work with the temp sensor unconnected. Only one of my units had the Bluetooth with the switch so I ordered 2 of the light bars just to mount a little farther from the battery. What I found is that using them must create enough current flow to keep the balance running. I seemed to have found this purely by accident after leaving the batteries for a day and a half. When I looked in the app the day I returned the cells were all balanced to within .001 ma. My 2 batteries are 24v 8s then paralleled.

[@raymondcasso7966]

So... did you left a load running over night? Or just the idle current from inverter?

[@none0049]

@@raymondcasso7966 what is your question?

[@juergwyser6520]

What kind of light bar do you mean? Could you pls specify. thx!

[@raymondcasso7966]

@@none0049 how did you get the batteries to pass a current if they are in parallel?

[@danfitzpatrick4112]

250a Daly has fans on it. Point of failure. I would never use a BMS that relies on fans for cooling. Also, I would never use a BMS like these that claim the amperage that they do. Fire hazards is all they are. Their 100a BMS should have #4awg minimum wire size and I think they use #8?

[@posplayr]

Giving me heart palpitations at 5:53 where the P- almost touches the positive of the first battery.

[@nicholaskeur]

Then the condom appears, maybe some welding was done LOL

[@barrymayson2492]

Yes spotted that thought that's the end of the video but a plastic bag appears.

[@isfanromeo]

Haha same here

[@OffGridGarageAustralia]

What would have happened? The BMS was set to 25A max cut-off current ;)

[@Ojames600]

The temp sensor has to be connected before the BMS will come on

[@OffGridGarageAustralia]

I turned it off in the settings and it started 😁

[@bleedingchrome]

👍

[@windpowered7771]

lol

[@michaelbouckley4455]

Will Prowse often shorts the Blue and Black wires to get them to turn on

[@OffGridGarageAustralia]

I will try that out!

[@JimFisherDIYPortableSolarPower]

Andy, I admire your channel, your style, and your dedication to research and testing. As others have pointed out, I think the Daly BMS does exactly what it is expected to do IF your cells are initially top balanced, closely matched, and then subject to daily charge cycles. I have been using a 4S 12V 150 amp dumb version successfully for the past four+ months with a 280 amp hour battery. As intended, my pack is being cycled / charged, frequently as it is under load 24/7 running refrigerators. I seldom find cell deviation much in excess of .014V, usually between.006 and .009V deviation. That’s a result that I can live with.

[@windpowered7771]

Daly does what its suppose to do, I have no problems

[@maandalorian]

Daly are passive balancers and their job is to keep a battery pack balanced. Not to balance a severely misbalanced one. They do that fairly reliably. That's why they are popular. You really don't need 100 settings to accomplish that. I am not sure if Daly deserves the epithets thrown around here.

[@lyfandeth]

Weld? Isn't it normal to spot weld battery tab connections? Or perhaps in Chinglish, they meant soldering?

[@pau1phi11ips]

I think they just mean "making a connection" in this context. Don't make connections to the balance wires while they are plugged into the BMS.

[@OffGridGarageAustralia]

Apparently they mean soldering. But still who is soldering balance leads on busbars or terminals?

[@henvern]

@@OffGridGarageAustralia What they mean is that you must only make use of the blue and black silicone flying leads that come with the BMS. Don't try to solder your own huge wires directly onto the BMS PCB. You can imagine how much mess some people may have created while attempting to do that.

[@DavidHalko]

@@OffGridGarageAustralia - “who is soldering balance leads” Probably someone putting a BMS & battery set in a box & selling them as a unit.

[@OffGridGarageAustralia]

@@henvern Is that what it means? You would have to open the BMS to get access to the PCB. There's your warranty gone then...

[@jamhough22]

Can you do a video on some bms recommendations? Im looking for a decent one but struggling to find one with decent specs and an easy app for use with multiple bms in parallel.

[@OffGridGarageAustralia]

You probably have seen this one already by now: kzbin.info/www/bejne/e6WmYaCJncaFmNE

[@davidvasylev]

Please make BMS recommendation video. Thank you for all your work!

[@paulpinner8618]

Is the QUCC waterproof like the Daly? My Daly keeps my 200AH cells at exactly the same voltage...but I did top balance them first. I need the low temp cut off in Tassie!

[@OffGridGarageAustralia]

Is the Daly waterproof? What about all the contacts and plugs around it?

[@paulpinner8618]

@@OffGridGarageAustralia Yes, waterproof

[@evil17]

There are all sorts of thermistors out there you can source cheapish & easily now, ebay, google, whatever, select a temp range you want they can do 10Amps, hook it up to a decent size relay to isolate ur batteries or to switch on a pet mat warmer or 2 under &/or around ur battery setup to keep them at a set temp. You could even probably just simply use a cheap 12v dog warming mat wrapped around ur batteries u could just turn on manually when necessary as a quick cheap fix, they dont use much power & some may have a thermostat you can adjust the temp this way to some degree, you can also use a PWM type dimmer or motor controller, cheapish again on ebay, to regulate the temperature so you can use less power to regulate the temp, the dog mat of different sizes you can also find at those horrible dollar shops for $20-$30, dont use the 240v - 12v power supply adaptor, just plug it straight into ur 12v battery bank. Cheers

[@juliorobles2681]

The QUCC bms is awesome, if you are worried about that when the relay turns off to protect the cells, the discharge function turns off too, obviously, what I did was took apart the relay and connect the battery cable directly on the bms shunt, and use the relay to turn of the charge controller instead, so when you have a high voltage alarm, just the input shuts and works perfectly. If you need to protect from low voltage just program the inverter to do that and you are all set. I tried the Daly bms but the Qucc is much better specially the software

[@OffGridGarageAustralia]

Oh, that is a great idea. I never thought about that. Actually I would probably connect a second really which then shuts off the solar. I'll think about it. Thanks for sharing.

[@septimiuclaudiucoman2804]

Bună ar trebui să vad o demonstrație

[@curtisc808]

Hey Andy. I have a Daly BMS and even though it doesn't show the balance switch on I believe it is still balancing. I have left the Daly connected overnight before with no charge or load. In the morning the deviation of the cells went from .1v to .01v. As for the bluetooth problem of having to push the button to connect. This only happens when there is no activity. So no charge or discharge. I believe it's a power saving thing. Once in actual use and actively discharging or charging the battery, it stays on.

[@bleedingchrome]

He doesnt know how to balance batteries

[@Steveuploads]

The blue tooth button reactivation could also be a security feature, anyone who maybe able connect with your permission one day would need to enter your property and press the button to start blue tooth the second time.

[@ddthames]

There is nothing really wrong with your steps to check the balance lead, there is a slightly different way that I like to use. Put the negative lead on the negative of the battery and leave it there. Probe with the positive meter lead, first the most negative lead of the balance lead connector. The value should be zero. Then move the positive lead up the row as you did in the video. I feel like this method removes any chance I might tough the probes together on the first two pins, as the connected probes are never even close. Also, if somehow the connection for the most negative lead is wrong, you are actually testing for connection of the most negative lead. If you start with the negative lead rather than the battery negative, you are testing "relative" to the most negative rather than relative to the battery negative. Thanks of your videos, I enjoy them.

[@scloh1]

I also have a Daly 100A 4S with BT but my BT puck doesn't have a button (I LOL'd at the heartbeat joke btw xD ). I immediately noticed you didn't have the temp probe as mine won't function without it plugged in. I also had to short pins 1 and 3 of the display board socket to 'wake up' the BMS and BT connection, and there was no printed manual (which is probably a good thing as online forums have much better information even though I was searching for literally hours). My experience with balancing was exactly the same and found out through trial and error that it's next to useless. The state of charge (SoC) is all over the place and never accurate so I just ignore it. IMHO, it's overall not a bad BMS as the protections all seem to work but I agree with you, there aren't enough settings options and the information from the app is too limited with not much in the way of useful context help. For some of the quirks, I just don't understand why they would implement it that way. Now with the recent update to V2 of the Android app, it asks for the PIN just to get the individual cell voltages every time you connect to the BT module, which is super annoying. It used to just be before you make any changes. I'd say if you're going to use these in their current state, you MUST top balance or be prepared to babysit with a resistive load while it charges. It sucks that you have to use the UART+PC and know all about 3rd party devices like RPi's etc. to get what I consider basic functionality, but my purchase was based on a known rather than an unknown, given the number of these out there. Great video, as usual.

[@bjornpinnenlindskog2350]

where did you find instructions for which pins to short for wake up? I do not have a wake up button.

[@janmasek876]

Hi Andy, you have missed the other settings - there are greyed out folders, you have to click on it to access the rest of the settings .... next to cell protection

[@rickard1802]

I have used daly bms extensively. several 4s and one 16s. Their software, updates, translations, and differences between board/software revisions and support is just a mess but he important stuff like lvd and hvd etc is flawless and imo you dont really't need to change any settings except capacity. 3.75v/2.2v HVD/LVD is set that high/low so you can charge up/discharge your batteries to 3.65/2.5 with charge controller without the bms cutting off to early. The bms need at least 2 amp charge current to balance 35mA balance current should be more than enough to compensate for drift caused by internal resistance differences. Obviously you cant use the daly bms to balance unprepered new cells. Go do the initial onetime top balance first, you know this already lol! :P The SoC calculations on 4s boards are a bit wonky. The password is just a password set in the app, the bms has no password and cant be changed anyway, see it as a "are you sure you want to change this setting" prompt. The bms definitely need improvements, especially in the software. But hardware seems good to me. Low resistance no heat =))

[@OffGridGarageAustralia]

Thank Rickard, great info here! With the other BMS' I had I could just wack the cells on and it would balance them over night automatically. For these smaller test cells, I never top balanced them just left them connected to the BMS and it would do it. The Daly seems to need a lot of cycles for that to happen if it only shaves off a small current while charging. Not a fan of that...

[@aday1637]

In my mind, the nice cover and tabs to fasten down to a surface are what draws people to Daly. Functionality aside, these look much nicer and are safer in that the leads are not exposed. I also think Daly is the Chevrolet while other's may be the Cadillac or BMW. It will get the basic job done but may not have all the bells and whistles. (Maybe a bad analogy, these days as most cars seem to have all the bells and whistles). Before condemning, though you should attempt to top balance then install to see what happens. Also you may have someone else's reject as the temp sensor lead is missing. AND THE RUBBER BAND IS NOT WRAPPED AROUND ANYTHING. I would make blanket statements about any brand without testing more than one.

[@OffGridGarageAustralia]

Thank you.

[@Tex260Z]

Two reasons, they come properly packaged, not like some DIY kit you have to make up yourself, and secondly they just work! 3 years in service no issues. You have to remember they were pretty well the original, not much else on offer 4 or 5 years ago. The only thing I don't understand about ALL these Chinese companies is why they don't pay a professional English speaker to rewrite their manual and instructions, it would reduce the number of customers issues by a huge amount. As an example Deligreen had their main wire connections described in opposing colours!

[@dashley2525]

The balancer does work over a 10 amp charge rate. The charging stops when one cell goes over the limit you set. You will never get the battery charged at higher than 10 amps. Over 10 amps and it goes on and off as that same cells go over the limit as soon as the charging try to start again. So it never goes anywhere. That is why I will install a QUCC 10 amp active balancer. Moreover if your delta increases with the charging, your charger amp ratio to balancer amp is to high. "Delta" is the voltage differences in highest and lowest cells.

[@bendelongis2945]

I have to agree Andy, I had such high hopes but my Daly 4S however it is a mediocre BMS at best. I have also got a 16S xiaoxiang type non-relay MOSFET based BMS and I'm far happier with it. I had a lot of trouble with my Daly when it first arrived, I had top balanced the cells and the BMS wouldn't start and I couldn't figure out why. I had to contact support as well and found out that I needed to discharge the cells a bit first before it would even work. I'm not 100% sure that it's the same with the larger cell count versions (ie 16S) because I'm aware they run a different chipset and protocol when communicating with the BMS. I found this out when I connected it to my VenusOS Raspberry Pi via USB to get the battery statistics. You're absolutely right around the settings, not enough configurable and the balancing might as well not be a feature. I am going to replace my Daly BMS shortly as I believe it is contributing to the poor performance of my 12V pack and will use it for bench testing only. Thanks for the video Andy it has confirmed my suspicions that it was just how the Daly 4S BMS works and not that my one was a lemon 👍

[@OffGridGarageAustralia]

Thanks for sharing, Ben. I was really disappointed with the Daly BMS, was hoping for a far better experience. Apparently you can connect it to a PC and have all the options available then to configure. But how cumbersome is that? The Daly will now be just a protection board when I do testing, same as you said. That's all it is good for.

[@windpowered7771]

Your battery is probably mediocre too

[@UnkyjoesPlayhouse]

Weird, I had the same problem you did, however my Daly came with the temp sensor and at first it was working, then the unti stopped charging but the chg and discharge switches indicated it was working but the pack would not take a charge, once I turned off the temp sensor it started working again? I have 8 32650 cells in series as a test, my cells are 6000mah so that should mean they are 6AH cells correct? Yours are 7200mah which should be 7.2AH so where did you get the 5.4AH? curious that I may not be understanding... Great video you saved my bacon.

[@dawiddebinski8728]

Does the Bluetooth works for you well? I need to hold all time the button, otherwise it loosing connection. Not mention that app requires access to almost everything on the phone.

[@daveduncan2748]

On the "Welding" issue: Do you suppose they mean "solder?" If not, maybe they are talking about spot-welding, where arrays of cylindrical cells are connected by spot-welding nickel strips to the batteries?

[@graemebushell7531]

I guess they mean soldering

[@farmerjhemp]

They mean don't short the -b to -p the common known way to restart these things. It probably messes something up in the internals over time.

[@windpowered7771]

Lol

[@PowerPaulAu]

Nice work Andy! The experience you had is surprisingly common, and it's largely because of people's expectations as well as the terrible documentation. Just because something is popular, doesn't equate to it being an excellent product. And it took me quite a while to figure out the fiddly settings. It's important to realise that they need to match a product with their needs. However they are still a good BMS for some people. The balancing function is very minimal, which in my case is fine, because I properly top balance my cells, and they are all well matched to start with. The wake up is something people have issues with very often, but the button on the BT module is a wake up button. It should only need to be used when you first connect the cells to the BMS. The "light board" also comes with a wake up button. There are other ways to wake them that work differently in different versions. The different versions is my biggest gripe with the Daly family, they're quite inconsistent with the features, connections, and firmware. I wish they would just settle on something and stick with it. However all that being said, they're still a very solid BMS for my usage. I've used close to 100 of them now, and never had a genuine failure (I bricked one in a moment of inattention with wrong wiring). But all my others, have been perfect. I use the 250A version, and it's handled well over 1000A peaks without any negative effect (of course it shut down after the preset 1 second time though).

[@PowerPaulAu]

@Sherylin I've only used Daly so far. But I have a JBD on the way for another project.

[@petereaton6740]

@Sherylin JBDis probably more popular than daly with big DIYers they use the same app as Andy's BMS, overkill BMS are made by JBD

[@drgloverable]

@Sherylin JIABAIDA Electronic Technology Co

[@__Game-Over__]

did you already connected the daly bms to an pc?

[@USA-GreedyMenOfNoIntegrity]

Touch your blue and black lugs together for a second to turn on BMS. Yes, a NTC thermistor sensor was including in all of my Daly’s. One was hidden under foam. Oh, The Bluetooth works when it wants to. Also there’s a timer on the Bluetooth. If you go to settings, you can enter 15300 seconds and that helps quite a bit keep it on. It will shut off if you go sit down and have a beer and go back to it 15 minutes later. All of this stuff is just a learning process. So far I like everything about Daly, except there is no LED or beeper. I also buy the touchscreen display as often as I can. In order to balance, you need to have electrons flowing.

[@OffGridGarageAustralia]

Thanks for sharing.

[@TexasStatesman]

Look closely at the Bluetooth module that he is using. It has a reset button on the front which can be used to wake the Bluetooth up. I have the same module but what’s interesting is that it does not have the Daly logo on the front. The ones with the Daly logo do not have the reset button.

[@USA-GreedyMenOfNoIntegrity]

@@TexasStatesman Some of my dallies have it because they are newer. The older models do not.

[@dronezap3075]

I have daly for 16 300 AH lfp batteries connected to a deye inverter. I always struggeld since my inverter would not charge with full power while there was a lot of pvpower available. More or less it was charging the whole day instead of charging fully in the morning. After I had low voltage faults and my daly was in sleeping mode when I discharged only up to 4KW and drawed about 2KW. I got across some daly settings in a daly forum and changed the referrence voltage from 3.2V to 3.6V This seemed to change the behavior. My batteries are now fully charged 10AM using full charging up to 4.5KW. Also did it charge 7KW more than usal on the first day. At night my batteries where before at 52.2V and newly at 52.9V Im still unsure if it os save to use my new settings since I dont like to reduce the life time. Is it save to have the referrence at 3.6V charging upt 57.5V?

[@lucifermorningstar1274]

did you equalize the batteries first ? if not drain them and charge from dead

[@woodtv4481]

I will be uploading my DALY review videos soon. I have a touch screen monitor that comes with it and we will retry all these to make things clear.

[@hasger1941]

hello can a daly smart li-ion BMS be setup to use on lifepo4 cells ?

[@patpegasus]

hello and thank you for your videos. I am a french admirator of your job. Just a question, I install the connections of the bms on the bars which relay the elements of my four 3.2 volts batteries, each of the wires goes to the 4 batteries. My question: we fix the wires with lugs on the connections, I think soldering these wires to the connecting strips, wouldn't the contact be better than stainless steel screws? thank you for your opinion.

[@OffGridGarageAustralia]

Bonjour Patrice. Yes, that is correct, I would recommend soldering the balance wires to the ring terminals. I have some bad connections for my own BMS which I know cause some problems. Soldering them will be better.

[@patpegasus]

@@OffGridGarageAustralia thanks for the answer. In France WE go to bed ! It IS midnight.

[@alexanderwamuth6073]

We just add an DALY active balancer in our Power-Packs. And it works perfect. You're right: Balancing battery packs by using a DALY BMS only is NOT POSSIBLE. In my mind it's a kind of merchandising stuff. YOU REALLY NEED TO ADD A DALY ACTIVE BALANCER. This active balancer balances the battery cells down to 2 mV deviation.

[@olafschermann1592]

So which BMS(es) are you recommending instead?

[@restfulplace3273]

Ditto. Was expecting alternative recommendation

[@olafschermann1592]

@@restfulplace3273 the answer is JK BMS

[@MrSqueegey]

I havr an 8s 24v daly bms.i found out it only balences while the charge indecater is on

[@OffGridGarageAustralia]

Yeah, that's what I found too, it's bit restricted in these terms.

[@bleedingchrome]

The only time you balance a battery is during charge

[@windpowered7771]

Thats the correct way to balance a battery

[@mccyrille]

I use this Daly BMS with my 16S LFP battery 14.5kwh DIY. An arduino check cells with RS485 protocol, and I turn on active balancer (the same as your with condensators) with a relay on the "turn on / off" pin on the active balancer PCB ; The active balacer is only activate at the end of charge, it's perfect for me !

[@OffGridGarageAustralia]

That sounds like a perfect solution. Makes totally sense to balance only at higher SOC and voltage.

[@redbaronrefining5322]

What active balancer are you using? I’ve been wanting to do this as well. Thank you.

[@brayonyx]

Nice solution with check cell with rs485 and Arduino can you tell me this solution

[@georgmuse]

Thats a great idea! I'm using Venus OS connected to Domoticz automation system which could act as a logic instead of arduino based on SOC. Thank you for this idea :)

[@OffGridGarageAustralia]

@@redbaronrefining5322 Have a look in the description of the video. There is a link to my website where you can find the active balancers.

[@perry9492]

What was the name of the BMS you liked better? I bought a Daly and the bluetooth disconnects after a few seconds if you are not changing parameters.

[@john_in_phoenix]

It is way too cold, plug in the temperature sensor. The button is reset, and it is used with the sleep timer. Balance only comes on during charging. QUCC is actually made by JBD.

[@bleedingchrome]

He doesnt understand how batteries work

[@michaelwilkes2519]

I have the 250A BMS from Daly. Once the battery is fully charged it balances itself after several minutes. I've had 250mv diff, but some time later its back to 1mv. Also when you turn Bluetooth on onyour phone, the app takes sometime to discover the bms. As long as you never disconnect Bluetooth on your phone, it will instantly be detected in the app. No need to press the button on the dongle.

[@solargirl7161]

He doesnt know what hes talking about

[@bleedingchrome]

Mine does the same

[@basspig]

I can't get smart bms to recognize my Daly bms. Doesn't show up in Bluetooth scan.

[@OffGridGarageAustralia]

You need to turn on the BMS with this button first. If you have, try another mobile phone.

[@TechiesRSA]

They make more sense in the PEV market , since you disccharch at much higher amps , often for safty we run discharge bypass and charge only BMS configurations. You would not want your battery shutting off leaving you without brakes.

[@radod6147]

I have same Daly BMS with 100Ah LIFEPO4 battery and works fantastically. Balancing is spot on. I'm not sure what is happening there. I do wish the app was better.

[@bassobalalaikka5005]

Chinese DIY kits (such as LM338 based power supply kits) that have "english" instructions that need soldering use the term welding when they mean soldering, so as Brass/Bronze and Copper are often called copper by them, welding seems to refer to welding brazing and soldering, depending on the context.

[@BajanAlan]

Some BMS come without leads

[@Yukonjackman1]

Forgive me for asking but I don't know 😕 Am i correct in thinking a 100 amp bms will work on a 280 amp battery as long as i don't pull over lats say 75 amps ?

[@soddoffbaldrick2209]

I got the same one - I got the temperature sensor no probs. But the Blutooth is visible, but it never communicates with the phone.

[@armenvegas]

I accidently touched the P- connector to my 20s2p 72v negative end and got a big zap. Is my bms dead now?

[@PhilippeCJR]

I get a locked Daly BMS app, cause the app is saying it needs a Software Update, and all options are locked out. It says it needs a secure firmware upgrade code? Any idea?

[@panospapadimitriou3498]

i bought a 4s as well for 46160 pack and forgot to check for the balance leads.. i ordered some 5pin and then i checked again at the box.. Sorry daly you had my back i didnt see it at first!!!

[@diysolaradventures7894]

😮 Andy I got my Daly Bms to actually work right I set the balance open start to 3.35 and walked away it's been balancing ever since and the balancer been staying on instead a lil longer instead of cutting right off it's sitting here balancing perfect right now 👍🙂

[@ennyw20]

Mahlzeit... Schönes Video. So stand ich auch da...🤣 Bei mir laufen daly und heyo bms. Aber ich lade Akkupacks ähnlich einem Werkzeugakku nur viel größer. Und verwende sie dann auch ähnlich. Die Bms schalten sich nach eine weile (einstellbar) aus um Strom zu sparen.Zum einschalten genügt ein kurzer Ladeschub. Wenn nicht geladen wird, ist auch der Balancer inaktiv (ebenfals um Strom zu sparen.) Es ist ja kein aktiv Balancer. Denn wenn ich die Akkus länger liegen lasse, würd ja der Balancer so lange weiter arbeiten bis alle Zellen irgendwann völlig leer sind. Im Dauerlade und entladebetrieb wie bei deinem großen Akku, kommst also nicht um ein Activbalancer drumherum.. Beispiel in meinem Bus. Daly bekommt Strom von der Sonne oder dem Fahrzeug. Nachts wenn Motor aus und Sonne weg, geht nicht mal die App weil der Akku in den Ruhemodus geht. Verbrauche ich aber Strom , bleibt er aktiv.. Steht der Bus mal 2 3 Wochen in der Garage, geht nur noch entladen. Also für meine Anwendung genau richtig.. Für deine nicht so wirklich.. Nur mit Aktivbalancer. Ps haben die DosenLeute schon bei dir gemeldet?

[@OffGridGarageAustralia]

Danke Dir, gute Informationen. Der Balancer sollte nur oberhalb der eingestellten Spannung arbeiten (z.B 3.55V). Er entlaedt also nicht den kompletten Akku, sondern sollte sich ausschalten wenn alle Zellen unter 3.55V sind. So funktioniert das bei meinem QUCC BMS jedenfalls. Hat sich keiner gemeldet. Ich muss mehr trinken ;)

[@ennyw20]

@@OffGridGarageAustralia genau so sieht es aus... Aber manchmal ist es doch besser ein wenig Strom zum (verbrennen) im oberen Spannungsbereich . So wird der Akku Stück für Stück (mos laden an und wieder aus) (kurz Strom verbrennen aus den hohen Zellen) wirklich Rand voll. Jedoch will man das wirklich 🤔 Wie ich von dir gelernt hab mit der Flachen kurve und dem steilen Anstieg zum Schluss hin.....?? Weiß nicht... Vielleicht von Zeit zu Zeit, aber nicht ständig... Mach bitte weiter so... Ich rufe nochmal beim kalibrierwasserabfüller an..😎

[@northernboy3023]

You need a temp sensor attached.

[@OffGridGarageAustralia]

for...?

[@michaelbouckley4455]

@@OffGridGarageAustralia He is in the North! I think you are usually safe from freezing. My BMS has 4 temperature sensors (for up to 24S). I do have a battery temperature sensor from my Epever Tracer 60A (6415AN) otherwise the SCC assumes battery is same temperature as the SCC, which is often 40C, and occasionally throws up over temperature warning, which should not happen until 85C. Had thought about a Victron Smart Battery Sense; for my Victron 100/20 Smart SCC, but it’s quite accurate on the voltage. Lifepo4 do not need temperature derating, as Lead Acid types do. Also no danger of freezing here in Philippines.

[@OffGridGarageAustralia]

@@michaelbouckley4455 Thanks for the info. That makes sense. Definitely no frost down here...

[@northernboy3023]

@@OffGridGarageAustralia before you changed the settings the reason why the bms wasn't working is because there was no sensor.......and yes I'm in northern Alberta Canada where -40c happens at least once every winter!

[@windpowered7771]

@@OffGridGarageAustraliaHigh temp disconnect for starts. Im suprised people watch this. You clearly dont understand basic electronics

[@DrSnuggles22]

How does it communicate with the charger?

[@awesomusmaximus3766]

One thing i was thinking of that low cut off voltage but I think that is a pull down voltage set point for high current draw stuff like mobility scooters etc they do advertise it for that application too

[@katamay]

I have such a problem bought 16s adjusted to 14s the last cell shows 0.899 although the tester shows 4 volts I change the settings to 13s, after which cell 13 shows 0.789 I change it to 12s, cell 12 shows 0.845 help!

[@irfansensoy5901]

Hello. I have a 5 kW solar energy system. A MUST brand hybrid inverter is available and is produced with 48v battery architecture. For now I am using it without battery. I want to add a battery soon. I'm researching ready-made or do-it-yourself systems. DALY has a product for home storage, but I think I won't buy it because of the balancing problem in the video. What is the BMS brand/model that can track the 59 parameters you mentioned in the video? Where did you buy it and for how much? We are planning to install a 13s-48v Lion system. Thank you.

[@OffGridGarageAustralia]

Use the JK-BMS for your battery. There are a ton of videos here on the channel to watch and learn.

[@waynerichards3025]

Hi. I am havng trouble getting the Bluetooth app into my phone. Daly BMS 250A [4s] unit...I recently purchsed for my battery build. The instructions look similar to yours in this video. I used the QR code to obtain the app but cannot. It takes me to a chinese site and the wording is all in chinese...I cannot understand what to do. Do you have any tips or suggestions how do I get the app for my phone so I can access my BMS?

[@geraldhenrickson7472]

Look at the proximity of the bare negative cable to one of the positive balance leads at 5:50. Maybe they touched? Thanks for the video

[@GluttonywithaGerman]

The issue is that you are using a 100A BMS with those tiny batteries. I think the BMS would have more time to balance if the Capacity was higher. I have the 250A BMS on order for a 560A Battery I am putting together. I will report my findings once everything is here.

[@tristansmith8920]

Hey andy could i please get a reccomendation on a 4s bms for my battery im building? Im gonna use 8 of the 304ah cells to get 600ah my questions are should i be running 2 individual bms? Also what would be your reccomendation for one? Im gonna have a 3000w inverter so was thinking 200a bms?

[@OffGridGarageAustralia]

It depends a bit on how reliant you are on this battery. For redundancy two separate banks would be nice, but you need an additional BMS. If it is for a camper, I would run every two cells in parallel and use only one BMS. Also the 3000W inverter can use up to 250A on 12V. So a 200A BMS maybe too small. You either can use a Daly or JBD BMS with such high currents and an additional active balancer from time to time to maintain that top balance.

[@tristansmith8920]

@@OffGridGarageAustralia yea its going to be for a permanent off grid setup so maybe the 2 bms might be safer... also was talking to my 12v friend and he said 2000w inverter will be enough so that should be a bit better... also a new question you just mentioned haveing a seperate actuve balancer is that another unit? Which one of them would you reccomend. You seem to do alot of testing so i trust your results. Thanks mate

[@kapri9857]

hi I have a question about dali, the charge app display with soc by inserting 280ah cells stops me at 75-80% with full cells. dali bms 200A capacity, if I set cells to 200a it reaches 100% what am I doing wrong ?? or is the bms not so reliable thank you

[@judgedredd8876]

Can you get your hands on a 250A JBD Smart BMS with Active Balancer for some thorough testing? Thank you!

[@billing100]

Actually when discharging i see only 0.05 V difference.after some time. Right after charging it was some 0,2xx V difference. Somewhere balancing is happening. I have 280 Ah 16S battery bank.

[@Александр-э1щ1я]

Daly create new LiFePo4 BMS Parallel 15A Module will you test the new product?

[@JeremyAkersInAustin]

I agree that balancing rule makes no sense. It should absolutely continue to balance as long as the voltage remains above the set threshold that you specify.

[@OffGridGarageAustralia]

Like all other BMS' do, I've seen.

[@abdulahfranz2053]

Hello andy, first of all....vielen dank für all deine tests und teilen deines mittlerweile geballten wissen von lifepo4...das ist goldwert für jeden der sich für dieses Thema interessiert! Eine frage bitte, Hello, I have been wondering for some time what the situation is regarding lifepo4 --- does it actually have an effect on the lifepo4 if it is next to a water tank/water canister? The question relates purely to the chemical reaction with each other? Electricity and water together lose nothing is clear!!! But purely the chemical magnetic reaction whether there is any influence...canister/tank tightly closed outside dry and lifepo4 classic in a housing 12v battery! Is there any experience or principles in electrochemical behavior? thanks a lot

[@russingersoll5761]

Can one replace the 100A BMS in a 12V 200aH Ampere Time LiFePO4 with a 150 or 200A BMS to increase performance?

[@patricknicolas1138]

Pourquoi les câbles bleus et noirs négatifs sont petit ? 6AWG pour 150A ???

[@Dan-LS]

I have the same, 100Ah cells, 4S. I use it some time, and Diff Vol is now 0.001 as it stand with 99%, so it seams to balance ok, at least after some time. I have set "sleep waiting time" to 15300S, that will keep the Bluetooth on all time and not go in sleep mode. If I remember right, to activate it first time, B- and P- should be connected with each other for a second, maybe it could be charger with 10A also to activate.... If I remember correctly.

[@OffGridGarageAustralia]

It needs some cycles as it shaves off some current with every charge cycle. It's a weird design of a balancer though. I'm not sure if this still works once the cells get older and start drifting more. Also, with the 300Ah+ capacity cells... how many cycles will that take until they are balanced?

[@henvan8737]

Yes the Chinese call soldering welding. Its a Chinese translation issue.

[@mrtestshoot]

I took it to mean connecting as none of the BMS connections are welded or soldered vs. Bolting

[@farmerjhemp]

They were calling shorting welding. To start the BMS you can touch the two main wires together. Probably not good for the BMS that's why they say don't weld the wires... Hahaha

[@ThanosSustainable]

I think you are mistaken. Even on XiaoXiang BMS, you can set balancing EITHER when charging or when testing, NO option either to always balance.

[@OffGridGarageAustralia]

Nope, the QUC balances all the time. Yes, I can set it to just balance while charging but if I disable this, it balances all the time. It's in my videos. I do this from time to time and just let the battery sitting there over night to balance, no charge, no discharge during that time. It's all ready in the morning then...

[@ThanosSustainable]

@@OffGridGarageAustralia yes, but do they then charge also while charging?

[@OffGridGarageAustralia]

How it works with other BMS' is that as soon as one cell hits the balance start voltage, it get's discharged with the balance current for as long as it stays above that voltage.

[@ThanosSustainable]

@@OffGridGarageAustralia on my BMSs, they balance either while charging OR while NOT charging. None of them balances all the time. I agree it doesn’t make sense of course.

[@OffGridGarageAustralia]

@@ThanosSustainable With all time, I mean it balances all the time once it goes over the balance start voltage, regardless if charging, discharging or resting. If it goes below that voltage, it stops balancing.

[@jacksonwhite23]

I agree it isn't a great BMS but for my 8s 24v system it was the only BMS that could do 200A with as the other ones were limited to 100A

[@OffGridGarageAustralia]

I guess, you have more choices now on the market.

[@mrtestshoot]

I made the same choice for the same reason. JBD is an option a lot of people are going to.

[@grinchyface]

I get it, but do you have a recommendation for a high amperage BMS? Daly and the same ones that overkill solar uses seem to be all I can really find. I need at least a 200a 4s BMS

[@OffGridGarageAustralia]

That is really the only advantage of Daly that they have the large BMS up to 500A. You can still use the Daly but I would probably use an active balancer in addition.

[@grinchyface]

@@OffGridGarageAustralia I actually ended up watching the rest of your videos, and decided to use the JK on a 24v system. I appreciate the reply!

[@phillipchen7749]

Hey could you do a video on connecting the smart daly bms to the inverter for battery communication?

[@RobertMcniel-ul7yb]

Why is there hardly or no video or explanation on a separate port daly bms...can someone share a connection and testing video please...

[@adharyanto]

I have a Daly (DeliGreen) BMS, 8S, 150A, it was annoying at the beginning, it was difficult to start, and especially the applications (PC/Mobile). That is why I tried to develop an application that suit my purposes, to be integrated with the other IoT stuffs, using Node-RED. In my opinion, the original applications are not good, and the hardware is not great as well, sometimes seems freezing/not responsive, not like what I want. The protection mechanism probably ok, but the balancing is not working well. So, for the balancing I parallel it using QUCC Active Balancer.

[@OffGridGarageAustralia]

Thanks for sharing.

[@diydsolar]

How do you do? I am planing also read uart port, send to nodered and log, send commands back, an so on.

[@reamtm1]

can i connect 8s lifepo4 320ah in series and then connect a second 8s lifepo4 320ah in series after i have these individual battery packs in series i can connect them in parallel to add a 24v 640ah system please answer i need to know thank

[@matthewknight5641]

Ho Andy I got a 300 amp 8s daly today. It's the smart bms with the fan to cool it. It seems ok but I'd never had a bms until this one. The Bluetooth seems like it disconnects a lot and I'm not sure if the balancer is working. Maybe its working and really slow at balancing. I also ordered a jk with 2 amp active balancer. May e the jk will be better but I'm not sure

[@OffGridGarageAustralia]

You increase the time the Bluetooth is disconnecting in the settings. Don't worry about the balancing. The balance current is so small, you won't notice it.

[@matthewknight5641]

@@OffGridGarageAustralia I bought a.couple of the 5 amp balancers. The batteries I have are the grade a eve 280 cells with welded 2 hole terminals. I hope once I top balance them they don't need a lot of balancing. I also bought 2 of the 6s balancers for my leaf cells. I got the voltage sensing relay and hopefully with help of your videos I can make them all work great and kinda automatic. Thanks for all the videos I learn a lot from you

[@FBay]

I have a scooter that runs on the 60 V battery I recently installed the Daly. My scooter can run on single or dual motor. I noticed when I switch it to dual motor and quickly accelerate it dies out and won’t turn back on unless I wake up the battery by unplugging it and plugging it back in. Does that have anything to do with the Daly because the surge of voltage is being used suddenly. Do I need to change the settings?

[@diysolaradventures7894]

One last issue how is it that my Daly bms is reading 27.6v saying 100% but my Victron Smart Shunt is saying 28.2v at 100% that's my actual full start of charge but why the difference??

[@OffGridGarageAustralia]

Welcome to my world. I have three BMSes and one shunt. They all show differently. Trust the shunt and don't worry about the BMS.

[@diysolaradventures7894]

@@OffGridGarageAustralia ohh ok

[@ernestlageman1553]

Love your videos ❤❤ can you help me whit the same BMS . It’s connected on 4 … 203 amp cels . It went out fore one year ago in time of use an electric minnkota motor. I have checked the the cels and the cels have not the same amps. 1 cel have 160 amps and the other til 190 amps. Very bad cels ! Now how can I get this Daly BMS on , how to get contact again ? I balance all the cells …

[@Dailyroach]

I have one and it works great I have 15 cells in series it balances just fine The setup was easy .

[@windpowered7771]

I just unsubed over this video

[@bleedingchrome]

I have one that works great too

[@piotrbpm]

Jest nowy soft do daly i zakładka ,,active balance" może jakiś test?

[@hexxe]

Hello, I need BMS advice for 60x 50AH Lifepo4 cell 48v 15s 200-250A and 48v 16s 200-300A good BMS with good balance

[@nzubeotor9073]

With balanced cells the Daly works great. Simply top balance your cells before you put into use. The daly will work great. I like hw the charging cutoff but discharging continues on the Daly. That's a very neat feature, worth a ton of other features on the QUCC. I even choose it over the all time active balancing on the QUCC... cos the QUCC balance current is still negligible. So basically a tool is best used when deployed hw it was designed to be used. Daly is best with Top balanced calls. Obviously the balance current on the Daly spec sheet tells you its not gonna balance an unbalanced pack for you.

[@OffGridGarageAustralia]

The Daly may work with smaller, new cells. I cannot imaging that it will be great after a few years when cells start drifting more, especially if you have 300Ah+ of capacity. The QUCC BSM does a fantastic job at top balancing. I can just leave the battery sitting there over night and it balances all cells automatically to 1mV.

[@nzubeotor9073]

@@OffGridGarageAustralia Sure. The Balancing is nice but - If the cells will experience as much a drift as you say they will with age, then the QUCC balancing current will not be able to keep up either way - Also a BMS that trips off power on any fault protection it does (over-current, over-voltage, e.t.c) isn't so great for someone who wants a handoff experience with these things like majority of users. That the Daly can trip off charge for protection (over-current, over-voltage) but keep power on (discharge), is really a very useful technical advantage.

[@windpowered7771]

@@FullyChargedZone I honestly think he doesnt know what he's doing

[@aday1637]

@Will Swift Top balance means to individually charge each cell by itself to the voltage you desire for your battery chemistry and do each cell to the same value. So when you connect them together they are all equal from the start. You can do this later from time to time as you deem necessary. Even when connected together, you can still put a charger on each cell + to - to rebalance them. You can balance them at any voltage your particular battery chemistry operates between (fully charged to fully discharged). Top balance means to charge each to the max you will charge to while using them.

[@refusneant]

Top balance is thé n’asservît 👍

[@David_11111]

yay but which bms do we buy ?

[@OffGridGarageAustralia]

I've got an interesting one on my desk. Give me until the weekend...

[@diysolaradventures7894]

Andy Im using the Daly bms I keep watching this video over and over and over and over and still can't figure out where to set the balancing start voltage no matter where I set it my last cell in the bank keeps deviating from the pack my last setting to try and fix this was 3.4v the actor balancer kicks in but the cell just keeps climbing higher and higher please help

[@OffGridGarageAustralia]

That's the problem with DALY BMSes, the balance current is so small, they won't be able to balance your large capacity cells. You will need and active balancer for your pack.

[@diysolaradventures7894]

@@OffGridGarageAustralia I'ma go ahead and switch my BMS to the JK Bms I'm just tired of Dalys poor performance in balancing I need 3 of them since I have 3 24v banks

[@OffGridGarageAustralia]

@@diysolaradventures7894 What batteries do you use? 280Ah or similar?

[@diysolaradventures7894]

@@OffGridGarageAustralia yes same blue lithium iron phosphate cells as the ones u have except capacity on mines are 277ah and my other 16 cells are 120ah

[@henrikostman4474]

Thanks for sharing, I’ll look into the QUCC BMS, however my DALY has been working quite nice. The warning about welding seems fair, I guess you could damage your BMS if its connected while spot welding the cells!

[@OffGridGarageAustralia]

If your Daly works, don't buy another one. The QUCC won't be much better...

[@henrikostman4474]

@@OffGridGarageAustralia Regarding that, is there a BMS that you DO recommend? I saw you have a video about JK-BMS, but if I need something above 12 volts?

[@OffGridGarageAustralia]

@@henrikostman4474 The JK goes up to 24s so can be used for almost any battery. If you want more communication, more safety look at the Seplos BMS, Pace or GobelPower. There are heaps of videos about all of them here on the channel.

[@yogeshnaik9276]

Thank you for this most wanted video...want to go for JK active balancer bms ..Pls let me know if this BMS will actually work on 36V (nominal ) battery pack..or it will shut of battery voltage drop below 40V as per it's specifications..

[@lyfandeth]

The Daly BMS appears to be painted red. One good layer of paint can radically change the effectiveness of the extruded heat sink it is on. So does the Daly run hot? Or did they waste money on too much extrusion?

[@OffGridGarageAustralia]

They may get warm when we push high amps though it. The FETs have some heat loss. Not sure how much the paint will affect that though.

[@alkalbo1]

do you know how to fix the firmware update?

[@phunwithphiphi8055]

I think these cheapish 'smart bms' achieve balance over several cycles by gently bringing the low cell up during charging. Not sure but think this is achieved by putting a tiny resistance on the other cells until full and eventually it will catch up. If I'm correct the way to speed up the balancing would be to set the start balance parameter as low at the max discharge of the battery and discharge the battery to lowest safe level then start the charge. For 99% of users achieving balance of a few cycles of normal usage is not a big deal.

[@kipas39]

Can active cell balancer work together with this bms?

[@OffGridGarageAustralia]

Yes, absolutely.

[@4565klaas]

in my instructions it says it will not work without the temp. sensor