QSO 11.7kWh Powerwall. Wait, what is this BMS inside? 😲

[@timothyflynn]

Just want to say we love your channel. We noticed you were a little down on this video maybe too many experts and critics out here. Just want to say you are appreciated and keep up the good work. My family knows you as the Australian solar guy that sometimes speaks German when he swears and calls things he can't pronounce Peter. I'm the one in the family with the solar obsession though Anyway hope this brings you some cheer. 👍👍👍

[@OffGridGarageAustralia]

Thanks a lot Tim, I much appreciate your email and kind words.

[@rahsomali]

hahah similar thing. his theme music comes on and my 2 year old rushes and wants to watch Andy work on the solar. i have a team here we are all Team andy.

[@tiborchren]

Hi, for me the best and most inspiring battery was and still is your DIY Battery 2.0 with JK BMS where you have all under your control. Thank you for your whole content, every day I wait, if there will be another your video.

[@OffGridGarageAustralia]

It really seems that way. If something goes wrong you know what and how to fix it. These preassembled batteries always have some unexpected surprises...

[@john_in_phoenix]

@@OffGridGarageAustralia I am still thinking of buying the empty metal box (it's cheap and I am sure that is where Seplos buys them) and building my own with 304AH EVE cells. It wouldn't be hard to build one better and cheaper with your favorite BMS.

[@wideawaketotruth5301]

Andy you are smart as a whip! I'm a Texas guy. That's a compliment my unmet friend.

[@OffGridGarageAustralia]

OK, thanks, I'll take it then, my friend from Texas.

[@FutureSystem738]

Thanks Andy - always great to see another video from you! Looking forward to another try at measuring it all. Keep up the great work. 👍

[@OffGridGarageAustralia]

Thanks 👍

[@Whitewolf4869]

This is actually the best DIY solar chanel on the planet hands down.

[@OffGridGarageAustralia]

Thanks a lot, appreciate your comment.

[@immrnoidall]

I think I like the upright design. I also like the idea of no setting as long as they stand behind their warranty. I think most want to just buy it and plug it in and forget about it because it just works.

[@OffGridGarageAustralia]

I'm not sure if 'most' would like a plug'n play battery. Otherwise why do they watch my channel? 😊

[@Juergen_Miessmer]

​@@OffGridGarageAustralia I build my own batteries DIY. But for a third (almost noob) person i dont want to install a DIY Battery. So this one is maybe a good locking solution.

[@immrnoidall]

@@OffGridGarageAustralia lol. you're right. it would take the fun right out of it. plus, this one is terrible. No SOC on home screen? crazy.

[@camielkotte]

I love how you directly cut to the essence of this thing. Thx Andy. In the next few years I want my house off grid and the biggest issue is "what if there is a problem?" Aan i the only one who can operate the battery installation or can every sensible charged person have a look at it for maintenance? These Seplos and qco batteries types need thorough investigation as they are bleeding edge technology given the flaws they have. This one Looks pretty, but has some concerns too. But there is room inside the box for a fuse and a balancer. The box looks good. While I'd prefer the stackability of Seplos , hanging then on a wall is probably best instead of tugging high amp wires on Wheels without a fuse. Best way to fry a cat probably...

[@OffGridGarageAustralia]

Yes, I understand your concern. If you want to maintain your battery over years, I think it is still best to build your own. You know exactly what is where and how to fix it.

[@jackoneil3933]

All the other issues aside, I would not be comfortable relying on the BMS for short circuit protection, both between the battery and the BMS, but it's a simple matter to add short circuit/overload protection on the output terminals. At 14:40 , I've had two out of three of those cheap shunt meters fail, both apparently due to an internal voltage regulator that over-volted or over-temped and burned the display. The third has been working find on a 60V LIfePo4 pack for over a year. As far as the upside-down handles, Might it be the weight of the battery exceeds the design capacity of the handles, and installing them up-side-down is to prevent breaking them?

[@OffGridGarageAustralia]

The BMS is certainly not a short protection device and we need either a fuse or breaker close to the battery. The handles are useless for this sort of weight. It's a 105kG and not two people would be able to lift it up with these handles.

[@jackoneil3933]

@@OffGridGarageAustralia Thanks Andy. Of course Mosfets in a BMS can, and often are a source of short-circuits.

[@OffGridGarageAustralia]

@@jackoneil3933 Yes, technically, maybe. But a short, we're talking about thousands of amps, right? A Chinese made BMS will go up in smoke, is my best guess... And from a electrical code perspective, MOSFETs are not considered a safety device.

[@jackoneil3933]

@@OffGridGarageAustralia LOL... Exactly! "vaporization short circuit protection" by the exploding MOSFETs, and vaporizing circuit boards. Even if Burning circuit board were able to interrupt the short-circuit, what's left of the the cables and lugs could short circuit together and/or against the case. Circuit breakers should have a current interrupting rating several times the maximum short circuit in-rush potential of the circuit to ensure that circuit breaker contacts don't weld together before they can interrupt the short-circuit, but even that in practice is not 100%, and one of the reasons fuses are usually the best option for short-circuit protection.

[@garys-half-baked-offgrid-dream]

Yup same in the UK my batterys will have caster wheels and quick release Anderson connectors.

[@Flowing23]

👍👍 thank you , great job.

[@OffGridGarageAustralia]

Thanks, Rob!

[@TrevorFraserAU]

Where did you buy those safety slip on shoes from? Do you know if they have a branch in Perth?

[@anthonyrstrawbridge]

I'm making Roulade while I watch the off grid garage. Nudeln und braune Soße.

[@OffGridGarageAustralia]

Hahaha, that sounds fantastic. Let me know when I can come over!

[@TrevorFraserAU]

What was that trick you did with the code and the light? Heard something you had in your hand drop, couldn't see what it was.

[@OffGridGarageAustralia]

Not sure what you mean. At what time was that in the video?

[@TrevorFraserAU]

@@OffGridGarageAustralia 7:26 sounded more dramatic when I listened to it first. Is that a torch or are you blocking the light? We struggle a lot to scan our codes and are looking for any tips here.

[@wayne8113]

Thanks Andy

[@HeinzMeulke]

Last time I wired a shunt the display could only take 24v max, if you like to measure more than 24v then power the display with seperate power and place the sense wire on the v+ and the negative connected to the shunt.

[@OffGridGarageAustralia]

I used this shunt several times with 48V packs and it can handle 0-200V. A separate power connection is only necessary if the battery has less than 8V, so for single cell testing...

[@meinereiner7072]

wäre es bedenklich die seplos/eel batterie boxen hochkant aufzustellen? oder kommt dabei zuviel Druck auf die unteren Zellen?

[@OffGridGarageAustralia]

That's totally fine, not problem. The cells can be in any direct just not upside down.

[@BobHannent]

I agree about the lack of a fuse/breaker, it's something I look for in a battery. As for locked down BMS, your original question was about a BMS and not about a premade battery. If it's for a premade battery then I understand why they limit the functionality.

[@OffGridGarageAustralia]

Thanks Bob. My question was for a locked down BMS to protect the manufacturer from warranty claims because people have changed settings and damaged the battery. A separate BMS cannot be locked down before it is connected to a battery.

[@todamnbad]

I'm a bit confused on having a breaker on a battery, if you have a problem or a false trip wouldn't that cause your charge controller to go up in smoke?

[@STRUTZKOFF]

no they are fine being disconnected at full load

[@todamnbad]

@STRUTZKOFF where does the power go then, the mppt even states that if no battery is connected and you have PV input you will destroy the mppt

[@slythee7423]

Where does it say such a thing? - the victron Charge Controller does a good Job controlling incoming voltage/ amps from solar reducing it to 0 if not needed via its settings. That would be horrible in an Offgrid Setup if it didnt. Imagine the battery being full and the Controller not stopping charging🤨

[@todamnbad]

@Slythee victron themselves, I accidentally left my PV breaker on and shut the batteries off and when I got home later that day the MPPT was to hot to touch, I turned the batteries on and everything still worked, I emailed victron (terrible support from manufacturer) I wanted to know if I caused any damage and I was told that when you run the MPPT without a battery the inverter has no "brains " to shut itself off, when you have a battery connected it senses the battery and the settings you have and it shuts off the PV input when it reaches your set parameters

[@slythee7423]

Very concerning, a Charge Controller is nothing else then a big DC to DC converter with some fancy stuff added on top (Like charging algorithms). It should not get hot when no load is connected. (No battery connected or fuse broken and Inverter off= No load). The only explanation i have is that "shutting the batteries off" didnt turn off the Inverter and it was going full ham or the Controller is internally faulty. You could test this simply by turning off charging in the Controllers settings and measuring temps of the controller. To get back to the fusing question: you should ALWAYS have a fuse as per victron guidelines downstream 1. Between the Chargecontroller and battery 2. Between battery and Inverter and If you're using a busbar system: 3. Between busbar and Inverter. Simply put every load should be fused in the positive line. There are such high currents flowing in these batteries and systems that are even higher than welding currents, so fusing is 100% necessary. Sorry that your experience with victron service was so bad 😅

[@clarencewiles963]

Thumbs up 👍 fuzz? Separate fuzz ? It looks well made.

[@keyem4504]

I hope you gonna test the heck out of the thing. I like the format. Maybe it's an alternative to a DIY battery if it gets your approval.

[@OffGridGarageAustralia]

I certainly will! Wait for the next video about the MS and software. This will already tell you something...

[@paulcurtis5496]

Like# 406, I was rebuilding my greenhouse after 75mph winds trashed it. Solar panels took the storm like a champ at least!

[@OffGridGarageAustralia]

Nice!

[@GapRecordingsNamibia]

HI Andy, That BMS looks like the same one that is in my Enersol batteries, but, they are not locked down and the password was very easy to guess.... I am making my video to day I hope the clouds stay away!!! 🤣😂 Mine have a 125Amp Breaker The BMS is locked down via the screen but you can access it from the software. The timeout on the screen remains it can't be changed.

[@OffGridGarageAustralia]

Thanks for the feedback. I'm in contact with QSO, so lets see what solution they com up with after all this feedback.

[@BobHannent]

Maybe to automate your battery testing, you could get a spare hybrid, grid tied inverter (e.g. MPP Solar). BUT set it to NO export and UPS mode. Use a Shelly smart Relay to switch the mains supply on and off, and have a battery charger running off the inverter to charge your BAT1.0 as the sink. Put the battery charger also on a Shelly relay to turn it on and off. In UPS mode the hybrid inverter will charge from your other batteries when the relay is on, when the relay is off the inverter will discharge back to BAT1.0. With some simple logic you can set it so that when the inverter hits a low battery alarm, it turns back on the 'grid' relay and turns off the discharge relay. When the battery is full it switches that back again, making a permanent cycle at 4-5kW.

[@Der_Hannes]

Another thing: Why would you put the main positive and negative terminals on the top when the BMS and Pos.Terminal is on the bottom?? They could save so much cablelength if they would just turn the cellpacks around or put the terminals on the bottom right side..

[@OffGridGarageAustralia]

Hmmm, good point!

[@mikebarkley2167]

Great video as usual, is the BMS comms for RS485 or RS232? This is a precarious situation, so much power and no fuse, circuit breaker or isolator!!

[@ALIAlali-fo9bp]

I wish you have great days mr. Please if u test sofar solar inverter and thanks for all time you gave

[@maikeljegerings5870]

Can all LifePO4 cells be placed in this orientation? I am using Lishen cells.

[@OffGridGarageAustralia]

It depends on the manufacturer specification, check with Lishen. You should also compress the cells in they are mounted on any of their sides.

[@bipedalprimate8109]

At 4:39 you mention that for some markets , like Australia, far less regulations apply for a non permanent or mobile battery. Could you explain/link which are the less regulations that apply? I am currently trying to comply with AS/NZS 5139 and wonder what alternatives exist.

[@OffGridGarageAustralia]

That's exactly 5139 which does not apply for mobile, removable batteries.

[@junkerzn7312]

Yowzer. No fuse, no breaker, no switch built into the case? That's a bit of a show-stopper I'd think. Great video as usual! -Matt

[@OffGridGarageAustralia]

It has the BMS switch with turns off the power at the terminals, but that's just electronically. I would like to have something with more substance to that... In a short, the BMS won't survive.

[@junkerzn7312]

@@OffGridGarageAustralia Exactly. FET switches are not fuses and they are not DC breakers. Not only would the BMS not survive, but the FETs could melt into a 'shorted' condition rather than a disconnected condition. There is precious little spacing on the silicon. This is also a common problem with transistors and diodes. The most common failure mode results in a dead short.

[@pragmaticcosmic2826]

​@@junkerzn7312 I agree, most of the blown MOSFETs I replace in failed motor controllers have failed short...the occasional ones fail open if they have literally exploded! LFP short might not be enough juice the open them all...

[@Eyezzzonly]

hi there Andy, i have a question for you, maybe you know the answer. I have also a RadioB Tech BMS with the xiangfang-china-app haha and wondered, if its possible to connect to a pc with a bluetooth-dongle or something like this? Is there a software for pc? You know that? Thank - Greetings from Dresden in naah....wolky cold Germany haha

[@OffGridGarageAustralia]

I could not find a software which runs Android apps on a PC while using the Bluetooth of the PC. I had a look at some but none of the emulators can use the PC's BT. All the best to beautiful Dresden!

[@Juergen_Miessmer]

No fuse inside is a minor issue. A BMS is already a kind of fuse and an inverter has also a fuse at the battery inlet. Its easy to install an aditianal fuse between battery and inverter in a single system. Or between Batteries and busbar in a multi unit system.

[@OffGridGarageAustralia]

The fuse is there to protect the cables and should be as close as possible to the positive connection of the battery. The BMS cannot be considered a fuse or safety related device. I'm almost certain that the BMS won't be able to handle a dead short of both terminals. There, the Seplos MASON box is doing better and has an internal fuse at least.

[@Juergen_Miessmer]

@@OffGridGarageAustralia It dos not matter where the fuse is within this circuit. The cables are protected anyway. The potential of the battery is floating. Your thoughts about the position of the fuse are based on a chassis grounded battery like for example in a car. A short on the terminals will be detected by the BMS overcurrent protection. There are videos on YT where exactly this was testet and veryfied. An additional fuse is recomended in multi unit systems to protect the cables from the multiple higher current available on the busbar.

[@pragmaticcosmic2826]

​@@Juergen_Miessmer re BMS handling a battery short current...I wouldn't bet on it. In the event of a short on the terminals it is relying on the time for the controller to sample the current, determine an overload then turn off the MOSFETs to be fast enough to save the MOSFETs from thermal destruction...maybe.

[@OffGridGarageAustralia]

@@Juergen_Miessmer While this is true from a technical perspective, the fuse should be close to the battery as possible to protect the cables. I have seen some videos of BMS handling shorts with mixed results. If the BMS is too small to handle the current, it will melt the MOSFETs and there is nor protection any more. I would not rely on the BMS as a short protection device as it may or may not work.

[@Sylvan_dB]

If you don't trust the settings on the BMS, why would you trust the internal power tracking of the BMS? External shunt is a validation requirement.

[@OffGridGarageAustralia]

As I said in the video, there was no other option as the shunt display died.

[@jerrylefunk5402]

Schön das du diese Powerwalls testest. Ich hab auch so eine aber von einem anderen Herstellern. Die sind alle gleich aufgebaut. Mein Display gibt die selben Infos aus. Bin gespannt auf die Fortsetzung des Videos. Wenn man nicht aelber bauen will ist das eine gute günstige Alternative. Achtung, mir hat ein Hersteller verraten das die Powerwalls qulifiziert werden nach Batterie Qualität, damit geht der Preis und die Garantie. Gibt A- und A Qualität.

[@OffGridGarageAustralia]

Und es gibt dann auch noch die A-Qualitaet😁 Werde nur diese und noch eine testen...Das wird sicherlich keine Test-Channel... Wie bist du mit den Einstellungen zufrieden? Kannst Du deine aendern?

[@jerrylefunk5402]

@@OffGridGarageAustralia ich habe mich gefragt ob die verschiedenen Powerwalls kompatibel zu einander sind wegen dem BMS und der Kommunikationsschnitstelle. Danke dir und Gruß aus Reutlingen

[@andriyatamaniv9419]

Have you ever tried to use a Pylontech US5000 battery? I haven't found any references in your videos yet.

[@OffGridGarageAustralia]

No, I never tried one.

[@elkjagger]

Great video, its a shame that for Mexico its very hard even get eve cells

[@youtuberotty3558]

Minute 10:40 -> Min. Cell Voltage 3,355V und Max. 3,471V -> Spannungsdifferenz von 116mV bereits im Ruhezustand?!? Ist das nicht viel zu viel?!

[@OffGridGarageAustralia]

Yep, the battery is not well balanced. I'll show this in the next video. Or the one after actually...

[@slythee7423]

But Andy it has SoC LEDs on the Side, so thats debatable if thats a negative Point only because it doesnt show up in the screen in the end :). Much more concerning on the other hand is the missing fuse Situation.

[@OffGridGarageAustralia]

But they are using 6 LEDs for 100% charge, that is how much per LED? Come on quickly, not maths, just intuitive looking at 4 of the 6 lights...? What's the SOC? Not 4 lights or 5 lights wich would be OK. 6 LIGHTS!!!!

[@slythee7423]

@@OffGridGarageAustralia completely true, it would be a much more elegant solution to just have it displayed accurately if you even have a Display built in already. It has some built in issues for sure! Pylontech are common here in Germany, having this exact flaw. 6 LEDs, no Display. But the Connection between VRM and Bms is reading SoC in % so maybe that would be the go to with this one aswell.

[@Ojames600]

WOW. I would love a pre built battery but these prices are crazy, Its so much cheaper to build your own. :(

[@markbrettnell3503]

But also... diy batteries can be serviced unlike 98% of pre-built batteries.

[@ricardomarcelino8388]

I disagree on the price issue in some extent. I build batteries, and just in the correct tools alone, I have spent hundreds... And in materials, when you need a lug, or cable, you always have to buy more than what you need. Overall, the battery construction quality, warranties, customer support, battery casing etc. it usually is well worth it...

[@Ojames600]

@@ricardomarcelino8388 You are correct, If you are just using one battery then yes, it probably cheaper to buy prebuilt, but for those that are using 2 or more, then once you buy the tools and wires to build the 1st battery, chances are you will have plenty of lugs and wire left over to build the 2nd, third or 4 battery much cheaper. even at half the price of a prebuilt.

[@inmyimage1081]

@@ricardomarcelino8388 To some degree I agree but I’m still WAY ahead of anything with comparable capacity for an RV. As for the tools and leftover parts, if I decide I’m never going to need them again I figure they should be easy to sell for at least 50% what I’ve spent.

[@OffGridGarageAustralia]

Is it really that much cheaper? I agree, a DIY battery is far more rewarding and easier to maintain, but if you factor all the parts in including a case... I'll do the comparison later...

[@HippocratesGarden]

No state of charge on the display, however, there is a series of green LEDs on the side... is that not a SOC indicator?

[@OffGridGarageAustralia]

Yes, that gives you rough estimate of the SOC. 6 LEDs for that. I mean, not 4 or 5 which would be easy to 'read', but 6...🤦‍♂️

[@Stefan_Dahn]

23:40 What a piece of crap. THANKS for testing! 👍👍

[@OffGridGarageAustralia]

I like the two tone colour.

[@AlexanderMeisel]

lowlight?

[@gpock8]

Why is the so tinny wires goes from the battery?!

[@SoundzAlive1]

Andy, Is it possible to add it to a Tesla Powerwall 2? André in Sydney

[@OffGridGarageAustralia]

No, probably not. There will be no communication between the two.

[@HippocratesGarden]

I would say, what is reasonable would be, to allow the changing of parameters, only if the user first "accepts" a warning that doing so will void the warranty. In other words, to "unlock" those parameters, they have to click and accept, and once that has been done, it cannot be unchecked. Gives the best of both. don't change if you want the warranty, or start making changes knowing it voids the warranty and the marker that it has been done (much like a security tape) makes it obvious.

[@OffGridGarageAustralia]

They could also allow changing some of the parameters only or set some max thresholds in the settings which cannot be exceeded, like 3.65V is the max allowed value for this parameter.

[@pragmaticcosmic2826]

Yeah I agree with Andy, it's easy for the manufacturer to set sensible limits and make some params non adjustable like max MOSFET temp etc

[@laurentsantaibambu7324]

Hi Andy,interesting, but I'm not convinced by the quality of finish? no fuse, no breaker?? And I think there was a problem at the level voltage of the Software!! it was showing about 100% charge with cell voltages at 3.29v??! (in the video,18.30mn) Quite simply, my idea is that the battery must do at least one charge and discharge cycle, to hopefully calculate again? The main thing in all this is that the cells are of good quality? (I also saw big differences in cell voltages during the screen display demo??) It seems to me that you say that it is full charge at more than 56v? if this is confirmed, I think it will be a problem, if it is connected to your system, with absorption 55.2v and floating 53.6v.??? Let's wait for the rest, the next video, because for now it's just the discovery. Thanks again Andy for sharing this video.

[@OffGridGarageAustralia]

Let me show you the BMS and software in the next video. I like the battery, if the cells are not balanced, that's not a problem as such and can be fixed easily. Uhm... can it? 😉

[@laurentsantaibambu7324]

@@OffGridGarageAustralia Yes Andy,we wait,the next video!! thank you😄👍

[@KevIsOffGrid]

Thats annoying with the lynx shunt not doing "DC" power calculation / correction

[@OffGridGarageAustralia]

Yes, absolutely annoying. Especially when the cheaper Smart Shunt and VRM can do it. Nothing more than an expensive fuse holder.

[@Juergen_Miessmer]

Looks very nice. What about the price?

[@inmyimage1081]

I was curious too and Andy already has it linked from his website. For 1-19 it’s $2,557 USD plus “contact supplier to negotiate shipping” which from looking at his spreadsheet of cell deliveries since ordering his first batch, shipping is really significant, don’t even have a Prime option! 🤪

[@Juergen_Miessmer]

@@inmyimage1081 Thank you. Comparing to what they charge for the cells, it is much money for a tin housing with BMS and some ascesoires... Yes, shipping from China is also a big point. The Battery still looks good an will maybe be a good solution for non diy.

[@inmyimage1081]

@@Juergen_Miessmer Agreed and a heavy box at that as compared with a DIY solution like Andy’s battery shelf setup.

[@OffGridGarageAustralia]

We will do a price comparison later...

[@markbrettnell3503]

You should pick up a seperate victron smart shunt for testing. You know how to set all the parameters on them and they give a full display of details too. Aand much more accurate then the cheap one that died as well.

[@markbrettnell3503]

Hey! You read my mind!!🤣🤣🤣

[@inmyimage1081]

Andy mentioned he is either thinking about it or is getting one, don’t remember which but he definitely mentioned it.

[@anthonysbarrett]

He did say he has one ordered, but it hadn't arrived.

[@OffGridGarageAustralia]

Thanks for watching the whole video, guys 😂

[@jezzafield-jones7404]

Can you do a review on voltax 300ah?

[@OffGridGarageAustralia]

12V battery? Maybe not...

[@mondotv4216]

With it being quite a bit out of balance delivered from the factory and no simple way of top balancing the battery it doesn't inspire confidence. You might have to put it into production just to see if the battery comes back into balance (doubtful).

[@OffGridGarageAustralia]

It will be in the next video...

[@Gary-wh7ce]

Maybe a cabinet temp sensor?

[@OffGridGarageAustralia]

With 4 cables? Hmmm....

[@ChrisEldridge]

Will this be a Peter BMS then?

[@grumpyjohntxredneckrc6346]

😜🤣🤣😁😎

[@OffGridGarageAustralia]

Yes, it is the Peter BMS!!!! 😂😂

[@Dino_Bianchi]

I have seen the following recommendation many times "Lithium Iron Phosphate batteries should always be installed upright". but that doesn't seem to be the case anymore...

[@OffGridGarageAustralia]

They can be installed in any direction but upside down.

[@MortifiedU]

🤣🤣 it’s a German thing, I bought jelly beans yesterday and one was 0.07 mm shorter than the rest. If it was longer you wouldn’t be hearing from me 😋 love your content but just laugh at a few things, “this battery was one day later but I guess that’s okay” It may have been 1 came off the line at 11:59 and the next at 12:02.

[@OffGridGarageAustralia]

All things I notice and share here. You won't find such info on other channels 😂😂

[@MortifiedU]

@@OffGridGarageAustralia I know champ lol, that’s exactly why I follow you and also changed my mind a few times on which bms, everytime I got excited you found a problem 🤣🤣 and I took notice and very very appreciative mate. Keep it up, entertaining and love it 👍🏻

[@TrevorFraserAU]

Oh, that's what a downlight is! Eureka!

[@bryanmendoza2770]

the weight of the cells will compress the bottom cells but it does not include the top cells. 🙂

[@OffGridGarageAustralia]

That does not matter though. We know compressing is going to prolong life cycle of these cells a lot.

[@ahbushnell1]

I didn't see a cover for the battery terminals?

[@OffGridGarageAustralia]

It's the yellow epoxy sheet in the lid I showed at the beginning.

[@ahbushnell1]

@@OffGridGarageAustralia I missed that. Thanks!

[@john_in_phoenix]

Like they would honor any warranty claims? I seriously doubt any Chinese warranty is worth the paper it is printed on. I am sure that it would require them to receive it in China (shipped on your dime) before any replacement (also shipped on your dime). At least the bottom cells are very much compressed (too much for my taste).

[@OffGridGarageAustralia]

Yeah, all very suspicious and muddy. Replacing a single cell is fine and easy but such a whole battery? I'm also concerned about the compression of the bottom battery. It gets more compression than the others. Will the top ones degrade faster?

[@john_in_phoenix]

@@OffGridGarageAustralia Ever since Will received a leaking battery from big battery with cells stacked like that, I just think it best to avoid horizontal cell placement. At least the fuse/breaker problem would be easy to fix, but why should that be your job?

[@OffGridGarageAustralia]

@@john_in_phoenix Yeah, lots of space in the top of the box for fitting a breaker. I guess, it would be a nice DIY project to install breakers in all the battery boxes...😉😉

[@Andrey_Ilchenko]

You can try to connect JK BMS and make test with it

[@OffGridGarageAustralia]

Yeah, but that's not the point. We cannot replace all BMS with JKs...

[@marco1862]

Another Peter BMS 😃😃😃😃

[@OffGridGarageAustralia]

Haha, yes, absolutely!

[@jacobifishing4442]

Get a victron smart shunt 😊😊

[@OffGridGarageAustralia]

You must have watched the full video, this is exactly what I said!!!😊

[@GTrainRx7]

I would consider your poll as a 50/50 split, even though 25% said it was ok. Why? Your audience is DIYers, so 25% of DIYers saying it is ok seems a super large percentage. Just my 2c! I would have voted "it is fine" as then a battery I bought would actually have a warranty. All the DIY batteries out there no longer have a warranty *unless you are a youtuber*. Try getting an exchange when your cell craps out after a year..

[@OffGridGarageAustralia]

Thanks for your comment. That is true. We don't know how the handling of a warranty claim will look like. Replacing a single cell is something different than such a battery. And are there still spare parts available after 5 years?

[@DanBurgaud]

re BMS: There are values that we should not go over such as: max charge/discharge current cell over voltage cell under voltage min/max temperature I'd prefer that it is failsafe - hard limit values such that we cannot go over. we can set anything as long as the values will not exceed the above.

[@inmyimage1081]

Seems reasonable given that the cells and bms are matched so no guessing how man cells a customer will have using the bms’s that vary for voltages. 👍

[@OffGridGarageAustralia]

Yes, that will be in the next video.

[@TheGalifrey]

That's the same as the Basen pack!

[@grumpyjohntxredneckrc6346]

This Battery Must Be Made By Same China Factory - Peoples That Make EG4 Rack Batteries, Same Cells w/Welded Lugs, Adjustable Caster Cabinet Feet, ETC... PS That Is A Temp Sensor Glued On Double-Sided Tape To Bottom Of Case...Thanks Mate 😁😎

[@OffGridGarageAustralia]

Ah, right, thanks for sharing these info. A temperature sensor with 4 wires... Hmmm...

[@tujuprojects]

Those handles are wrongly installed. Likely so are the internals too.

[@OffGridGarageAustralia]

Yeah. I didn't realise the cabling and batteries. Not sure what the reason for such a design is. But lets see how they deal with the feedback...😉

[@Dutch_off_grid_homesteading]

Heya, not good that you can't go in to the settings

[@wiggyb854]

Price???

[@OffGridGarageAustralia]

Linked under the video...

[@ocular57]

120mV cell difference at 51V. Needs a good active balance first. Smells of poorly matched/ quality /unbalanced cells if this is after full charge and the reason the BMS was triggered on full charge. Need to rip out the BMS and replace with everyone's favourite JKBMS. Junctek have a good smartshunt for those that can't pay premium for Victron gear.

[@OffGridGarageAustralia]

Yeah, charging it back up right now before I can continue with testing. It seems fairly unbalanced to me from a first glance.

[@bearupfarm1818]

I would not care if bms locked . As long the manufacturer honors there warranty. If the battery capacity says 280 amp hour it should have that. And 3 years later the battery should not drop50% of the capacity.

[@OffGridGarageAustralia]

Just wait for it...

[@houseofancients]

this look an awful lot like a pacebms ( used by amongst other sok and orientpower) or narrada bms ( eg4)

[@OffGridGarageAustralia]

Could be well a Pace BMS...

[@cyberplebs6577]

🐸🐸🐸

[@OffGridGarageAustralia]

🐄🐄🐄

[@larsfilusch8705]

Looks like a topband BMS.

[@netrocker9990]

@8:25 that's a heating pad

[@OffGridGarageAustralia]

Hahaha, yeah, for a cup of tea to keep it warm!

[@SkypowerwithKarl]

That device on the bottom; cell leak detector?😂

[@OffGridGarageAustralia]

Must be something like this😁

[@imag555]

Hey Andy was my first comment censored? sorry if i offended the channel. Was trying to help. Worked with that BMS before and it as Bluetooth option.

[@inmyimage1081]

Probably not, if you leave a link or use certain words, even when they mean something totally different in context, they automatically get routed to a special “mailbox” that he has to go and either manually approve or reject. Most creators I’ve talked to about the subject don’t even realize it’s something they have to do, or at least they don’t admit to because it must be a nightmare of spam

[@imag555]

@InMyImage thanks for clarification I see what just happened now.

[@OffGridGarageAustralia]

I had to turn links off for the whole channel. KZbin does not allow any fine tuning. We would have so much spam on here otherwise... There is a held for reqiew tab but I never look into it. It's far too time consuming to check comments manually, follow links, evaluate them and then decide if the comment is beneficial and not spam.

[@imag555]

@@OffGridGarageAustralia thank you Andy! im good with this .' InMyimage" was kind to help me understand. These BMS"s factory make great products but needs our help to fine tuned them . The software , hardware and other things can always be improved . These engineers really needs our help. Keep doing the good work . even when it fails there is something positive to build on. Cheers my friend , i will drink a cold one to you!

[@SEANRMZ]

How much do they go for $$

[@OffGridGarageAustralia]

Link is under the video...

[@SEANRMZ]

@@OffGridGarageAustralia sorry but I tried to click on the link but brings to home page.. no pricing

[@OffGridGarageAustralia]

@@SEANRMZ Yes, it goes to my homepage and should show the battery there with a further link to their store on Alibaba.

[@gruetoo1]

No fuse No Breaker No deal. I would not use this in this configuration. So how can we Frankenstein this beast into a safe functioning battery? Have a spare 16p BMS about? How about at least a 200 VDC Breaker/fuse......

[@OffGridGarageAustralia]

We could simply replace the bottom link between the two rows with a fuse? I'll check that and see if this would be an option. The BMS... let me test this first...

[@wolfgangziler6125]

I would not suggest batteries built that way. 1. The cells lie on the side 2. All batteries on top of each other, so the lowest battery carries all the weight of the other cells EVE makes not really a recommendation about the positioning except top down is bad. Calb says they prefer standing position, Position on the small side is OK, Position on the flat side is not recommended and top down is forbidden. If you have a better look at the way a cell is built, then it may happen that the Anode or Cathode is not fully covered in electrolite. To quote Andy: "Not good" ;-).

[@BeastMovies]

Welded terminal batteries inside is always a turn off. 1 battery dies, the whole thing is dead. It's not like you can send it back for repair to CHINA. I like old Andy's youtube where he'd buy cells and then tell us how good the seller was. I buy from QSO but there's more cheaper sellers out there. All the budget battery youtubers have gone now. I loved old Andy's price breakdown on the batteries. Now all the batteries you buy are marked Top Secret or samples. I have notice lately that cells are more expensive then these all in one batteries. So the 230ah cells inside are about $70 each but to buy they are $115. They must be betting the whole unit goes down, so they get return business because if 1 battery dies, you replace the unit. Every other industry you can replace a single part but welded batteries. You don't replace your car for a flat tire.

[@OffGridGarageAustralia]

How often does a single battery die though? And even with single cells, how do you get them replaced in say 5 years. Not sure if they still sell 230Ah or 280Ah in 5 years... We will be back to DIY stuff soon and deal with lots of single cells... lots... I'm having a look at these pre-assembled batteries for a reason ;)

[@Juergen_Miessmer]

With welded bars you will never run into contact problems.

[@BeastMovies]

@@OffGridGarageAustralia Andy, I know the cells take weeks to get here to Australia and then the whole fixer thing at customs. That's why it's interesting to see what happens. Did you get a good or bad deal. Did the batteries even arrive. I've had that. LOL This would make good viewing.

[@OffGridGarageAustralia]

@@BeastMovies They are still in transit and won't arrive for another two months, I believe. Nevertheless, the capacity test of the QSO was... arghhh, what am I doing, it will come in a video soon. At the beginning, I didn't like the welded terminals either but for such a battery it makes perfectly sense. And we never have to deal with bad connections, right? But, wait, there is more...

[@michaelheinelt]

Galvanische Trennung ist nicht gegeben. Wer länger was von seinem Equipment haben will, sollteUSB galvanisch trennen.

[@grahampahl7100]

I'm being quoted over $3500USD for this battery despite it being on Alibaba for $1900AUD. Looks like a bit of bait and switch going on with this battery in regards to pricing.

[@OffGridGarageAustralia]

Quoted form who? Some manufacturers are including the shipping, tax and import fees in their prices, so the price you see is not increasing.

[@grahampahl7100]

@@OffGridGarageAustralia quote was from Amy with QSO

[@Eyezzzonly]

you should charge your batteries, not the seller of the bms haha^^

[@typxxilps]

looks like a lot worser battery than the Seplos. guessometer instead of soc and a mediocre display and a not pressurised cell configuration. Hope for the next can bus battery

[@OffGridGarageAustralia]

Wait for the BMS and locked down parameters...

[@Pedaaa]

its PaceBMS

[@OffGridGarageAustralia]

Could be...

[@davidrogers5343]

Do you need a charge controller with a BMS? or is this another way to get your money? Have a Battery Montor to help with amp? sometimes I think yes, it is all about your money. send me a YES or NO dave73y old

[@jamesemery1]

no fuse protection internally and no access to parameters. I wouldn't buy it.

[@OffGridGarageAustralia]

Good feedback, Wait, there is more...

[@netrocker9990]

Front design is copied from growatt

[@OffGridGarageAustralia]

They all look the same inside, right? One design fits them all 😊

[@ШурикРыбак-в5ь]

First😅

[@OffGridGarageAustralia]

🥇

[@mikeunum]

no

[@OffGridGarageAustralia]

Yes

[@Whitewolf4869]

This chanel used to be much more interesting DIY projects and experimenting. Now it's just reviewing manufacturers crap

[@grumpyjohntxredneckrc6346]

Yep, He Has Passed To The DARK-SIDE Like Most Other Y-Tubers Do, For All The FREE STUFF & KICK $-BACKS... 😁😎

[@garys-half-baked-offgrid-dream]

Some of us just come here to see Andy! 😍😍😍

[@IntermitTech]

Sorry but that is just a bit uncalled for. This video fits perfectly fine in a DIY perspective even in my opinion but that's an opinion. But do please consider that this creator actually does read the comments and now he'll actually feel like he's let you down. What about his recent content did you find "too commercial"?

[@grumpyjohntxredneckrc6346]

@@IntermitTech Yes, I Know He Does, That's Why I Said It, To See What His Reply Would Be... 🤔🤣🤣😁😎

[@Whitewolf4869]

@@garys-half-baked-offgrid-dream 🤣