12v 60a LiFePO4 Solar Battery BMS for $32- Installation and Test!

BMS can be found here: www.mobile-solarpower.com/raw...
0:16 - 1:45 How to Build it
1:46 60 amp Load Test
3:41 Over Current Test
4:45 Over Voltage Test
6:56 Over Discharge Test
8:44 Conclusion and Things to think about when choosing a BMS for your system
Build your own LiFePO4 battery solar system here: www.mobile-solarpower.com/des...
Aliexpress Link:
s.click.aliexpress.com/e/chckb6S8
If you buy a box of 10, they are crazy cheap:
s.click.aliexpress.com/e/cjzKwV0G
24v 8s LifePO4 60 amp bms:
Aliexpress Link- s.click.aliexpress.com/e/cP9nXkh2
Cheap but high quality mppt that has low temp disconnect for lithium batteries: amzn.to/2QaEZT5
Does off-grid solar confuse you?
Check out my DIY friendly website for solar system packages and product recommendations, and so much more! www.mobile-solarpower.com
Join our DIY solar community!
#1 largest solar forum on the internet for beginners and professionals alike:
www.diysolarforum.com
Check out my best-selling, beginner-friendly 12V off-grid solar book (affiliate link):
amzn.to/2Aj4dX4
If DIY is not for you, but you love solar and need an offgrid system, check out EnergyPal! They will price out a system and get your house offgrid: energypal.com/diysolar/
My Solar Equipment Recommendations (Constantly updated! Check here first):
12V/48V Lithium Batteries: www.mobile-solarpower.com/sol...
Solar System Component Directory: www.mobile-solarpower.com/sol...
Complete 48V System Blueprint: www.mobile-solarpower.com/48v...
Plug-N-Play Systems: www.mobile-solarpower.com/ful...
Complete 48V System Kits: www.mobile-solarpower.com/com...
DIY Friendly Air Conditioner/ Heat Pumps: www.mobile-solarpower.com/sol...
My Favorite Online Stores for DIY Solar Products:
Signature Solar
Offgrid One-Stop-Shop. Best Value 48V LiFePO4, Victron and Offgrid Specific Heat Pumps:
www.signaturesolar.com/?ref=h...
Current Connected
SOK, Victron, Mr.Cool Heatpumps and High Quality Components:
currentconnected.com/?ref=wp
Ecoflow Delta
My favorite plug-n-play solar generator:
us.ecoflow.com/?aff=7
AmpereTime
Cheapest 12V batteries around:
amperetime.com/products/amper...
Renogy
A classic 12V solar store that has been around for ages!
renogy.sjv.io/n1VjXx
Rich Solar
Renogy's biggest competitor! Similar products, but at a better price:
richsolar.com/?ref=h-cvbzfahsek
Battery Hookup
Cheap cell deals
bit.ly/2mIxSqt
5% off code: diysolar
Contact Information:
I am NOT available for personal solar system consult! If you wish to contact me, this is my direct email: [e-mail]
Join the forum at diysolarforum.com/ if you wish to hang out with myself and others and talk about solar
FTC Disclosure Statement and Disclaimers:
Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :)
DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program,
An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com

[@WillProwse]

0:16 - 1:45 How to Build it 1:46 60 amp Load Test 3:41 Over Current Test 4:45 Over Voltage Test 6:56 Over Discharge Test 8:44 Conclusion and Things to think about when choosing a BMS for your system ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Does off-grid solar confuse you? Check out my DIY friendly website for solar system packages and product recommendations, and so much more! www.mobile-solarpower.com Join our DIY solar community! #1 largest solar forum on the internet for beginners and professionals alike: www.diysolarforum.com Check out my best-selling, beginner-friendly 12V off-grid solar book (affiliate link): amzn.to/2Aj4dX4 If DIY is not for you, but you love solar and need an offgrid system, check out Tesla Solar. Low prices and great warranty, and they can take your entire house offgrid with their new Powerwalls: ts.la/william57509 ~~~~~~~~~~~~~~~~~~~~~~~~~ My solar equipment recommendations (Constantly updated! Check here first): 12V/48V Lithium Batteries: www.mobile-solarpower.com/solar-batteries.html Solar System Component Directory: www.mobile-solarpower.com/solarcomponents.html Plug-N-Play Systems: www.mobile-solarpower.com/full-size-systems.html Complete 48V System Kits: www.mobile-solarpower.com/complete-48v-solar-kits.html DIY Friendly Air Conditioner/ Heat Pumps: www.mobile-solarpower.com/solar-friendly-air-conditioners.html Complete 48V System Blueprint: www.mobile-solarpower.com/48v-complete-system-blueprint.html ~~~~~~~~~~~~~~~~~~~~~~~~~~ My Favorite Online Stores for DIY Solar and Coupon Codes: -Current Connected: SOK, Victron and High Quality Components. Best prices and warranty around: currentconnected.com/?ref=wp -Signature Solar: Cheap Server Rack Batteries and Large Solar Panels: www.signaturesolar.com/?ref=h-cvbzfahsek -Ecoflow Delta Official Site: My favorite plug-n-play solar generator: us.ecoflow.com/?aff=7 -AmpereTime: Cheapest 12V batteries around: amperetime.com/products/ampere-time-12v-100ah-lithium-lifepo4-battery?ref=h-cvbzfahsek -Rich Solar: Mega site and cheaper prices than renogy! Check them out: richsolar.com/?ref=h-cvbzfahsek -Shop Solar Kits: Huge site with every solar kit you can imagine! Check it out: shopsolarkits.com/?ref=will-p -Battery Hookup: Cheap cell deals bit.ly/2mIxSqt 10% off code: diysolar -Watts 24/7: Best deals on all-in-one solar power systems, with customer support and distribution here in the USA: watts247.com/?wpam_id=3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Contact Information: I am NOT available for personal solar system consult! If you wish to contact me, this is my direct email: [e-mail] Join the forum at diysolarforum.com/ if you wish to hang out with myself and others and talk about solar FTC Disclosure Statement and Disclaimers: Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :) DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program, An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com

[@oz93666]

Nice video ... the BMS is meant to get hot ...don't worry about it ..... Balancing only starts when fully charged , the BMS slightly discharges the cell which is full first so the others can catch up ... but this current is very small about 30mA , cells don't get out of step much ... so they must all be at the same level before you connect the BMS , so they start off balanced ... They often don't come from the factory at same charge level ... leave the cells in parallel for a day , then put in series and connect BMS

[@rcman6895]

Hey man you seem to be pretty smart when it comes down to BMS can you help me out with trying to get mine hooked up my setup is a little bit different than the one I saw on your video

[@TimShedsworld]

Hi, I have the Daly 12v 100amh bluetooth bms, can I use it for a 12v 200amh lifepo4 8 cell battery

[@gkeith4120]

@@TimShedsworld I believe you can if it is an 8s BMS. My understanding is that you will be limited to 100c rate….Which is probably good because you do not want to charge any battery at full C rate.

[@KE8MWQ]

I'm a 56 year old grandmother and find your videos and book on solar the easiest to understand I'm getting ready for my first build going to use it in my day tripper van.

[@billyhendoe4170]

I'm 51 next month and agree. Will should be teaching at a Tech college.

[@jathomasify]

I'm 78.

[@Steve_1999]

If I had to pick out a favorite video, it'd be this one. I think it's because you did your usual teaching and also included a little experiment.. That was interesting.

[@brian_abroad]

I learned a lot from this video; a well done hands-on practical demonstration of what you have been teaching us.

[@mamastarandlittlerainbow3771]

You are SO interesting to watch! You are an incredible teacher...very talented at explaining complex systems. Thanks for your videos.

[@Yanger1410]

I mean i dont get it fully yet either but a complex system is Something different...

[@zoochdjz]

I’ve watched your videos so many times, every solar forum I read I end up reading in your voice 😂 thanks for explaining things so well you’re now the default battery/solar voice in my brain

[@chazbarclay]

You have a great channel and website. No BS, straight to the point with a wealth of info, and a great personality backing it all up. I'm stil hoping for a vid on adapting van/rv system to charge at a tesla and ev station. :)

[@brucegillingham2793]

Thank You love to watch and learn from you.

[@steveguthrie573]

Always love your videos. Your are my go to guy for anything solar and I really appreciate you unbiased testing of everything. I learn something new everytime.... keep em coming....

[@chazbarclay]

He was doing these types of vids in a RV and killing it. Now he's in a house, doing the same, rolling a Tesla, tearing open batteries and solar geneators. He just needed more room.

[@kfstreich4787]

That's building a business for ya!

[@johnc7144]

You have become my primary source for updating my knowledge of PV systems. In the 80s I ran a solar thermal research and manufacturing company. Question. What was the monitor you attached in parallel with the BMS. Simpler than app and bluetooth connection for a quick look. Keep up the good work. I think you've found your calling.

[@JoeHerring]

Thank you for your review Will. I purchased a battery box built to hold a trolling motor battery and have been looking for a the proper device for battery protection. (4s 100a LiFePo4 Winston) Thanks to your video, I have found it. Already purchased and delivered. Can't wait to hook it up and test.

[@FirstLast-ml7yf]

Worked well on my 4s4p headway pack..

[@dc5833]

Another fine video. You’re the best. Thank you very much.

[@phonemd1]

great explanation! You're an excellent teacher!

[@Kee_Diddy]

I actually like all of your videos before I even watch them at this point. Thanks Will! I know I can count on you to accurately test hardware!

[@WillProwse]

Thanks man!! :D

[@winterburan]

Thanks for the test, I have Winston LiFePo4 batteries, charged at -18 ° celsius in winter, no problem for 6 years!

[@WillProwse]

That's impossible

[@winterburan]

@@WillProwse Ciao Will ! I have been there for 6 years in a fiberglass cabinet for electrical systems, they are at 2980 meters above sea level in a mountain bivouac with 2 x 200W panels, even the temperature has fallen below -28 ° C during some nights of January, do not give up, those who sold them guaranteed up to -25 ° C, put them in the freezer up to -32 ° C and still went with reduced capacity but loaded, the Winston itself gives it for -45 ° C

[@daviscrt]

I also just purchased your book. Awesome. Thank you for you solar videos. I will be adding more to my RV

[@hardlife3844]

Good stuff. Always like to see testing of less expensive equipment. Good way to separate the wheat from the chaff.

[@cheddar2848]

Aw3some video Will very informative and like when you get excited when you give tips and learning at the same time. 😀👍Be cool!

[@thrownexception]

I imagine you get a ton of questions from people delving into this area but hoped you could enlighten me if you have time. I created a 3S24P 18650 battery to be used as a driveway wall lamp. I used a Daly 20A BMS but did not realize it was either that small nor using a non-standard BMS cable. As a result and in line with one of your other videos where you stated no negative repercussions exist for hooking multiple BMSs to a battery, I added a second 3S BMS cable. Attaching the first to the B0 (most negative) and on the positive side of each series set each subsequent cable (B1-B3 , Matching the Daly only ensuring I used separate a separate location on the nickel plated fuse sheets). Once complete I tested voltages reflecting a 4v jump per connection telling me it was connected properly. I then attempted to use the BG-8S attached to the newly created battery but it never powers on the unit. I assumed maybe the device was faulty and tested a prefab 3S commercial battery and it powered on properly and showed the state of each cell. What else could I be missing as I have run out of options. Sorry for the lengthy post but I wanted to be as concise as possible. Thank you for your time and your videos I find them very helpful.

[@spyghetti]

Will, you're an information beast! ty for the great videos and information.

[@FirstLast-ml7yf]

Thanks...just picked up one of these to use on an old 16S ebike Headway pack, to be repurposed as a 4S4P trolling motor battery. Should be straightforward.

[@FirstLast-ml7yf]

Hooked it up and top balanced my Headways nicely over night. This works...

[@MhuYacht]

Excellent . always watching your videos .. hare learning much more then other links . Base in LANGKAWI MALAYSIA

[@Vayneinsanity]

Was pretty amazing :D .I like your videos because I learn more every day . Just KZbin keeps un subscribing me from channels. An idk why .

[@positronium3525]

I was recently looking for a 50A 4s LifePO4 BMS and I saw these on Amazon, if I remember correctly. I never buy into waterproofing claims when it comes to PCBs. I steered away from these BMS because it made no sense to waterproof the BMS as all it does is cover it up and remove the BMS from the heat sink (in this case the ambient air). The case will cause the BMS to heat up abnormally high as the heat can't be adequately dissipated by into the air. Another item to clarify for the audience is that not all BMS have a balancing function. There is no point in balancing during discharge (with a non-regenerative balancer) and especially with LiFePO4 cells (as the cells will remain within a narrow range between 3.2V and 3.4V for a large portion of charge-discharge cycle) as all it does is reduce the useable energy of the battery; that is why most cheap BMS that have balancing function begin top balancing only when the individual cell voltage reaches 3.6V.

[@LFPSair]

Positronium good info.

[@solowiejs]

Nice series Will! I just binged most of them and my head is full. On this BMS, I didn't catch whether it has a Low Temp Cut-Off. Do they all? Thanks.

[@zeb4269]

Great video, as always! You are the best guide ever

[@adon8672]

For some reasons I can't see the video but the sound is clear. Other KZbin videos are viewable.

[@Tsiri09]

Wonderful video!

[@alvarogaitan2529]

thanks very much you number one you numero uno terrific videos

[@claudiorivieccio4967]

Very good video. Bravo!

[@pamthepainter]

Another great video Will thank you so much for your time for your effort we love you God bless

[@kvjqxzz5905]

top notch work again our Will

[@davidemillerjr]

Will, Are you charging through the BMS with the shore power or the solar? Thanks for education. Enjoy all your videos.

[@kcdaniels58]

Thanks for another well done informative video !

[@donaldswords6736]

Hi Will, Thanks big time for all your videos! You have truly given me an education on Lithium Ion Batteries. I recently tore apart a 12V 100AH battery to reconfigured the cells into a slim battery. I numbered all the wires of the BMS and reconnected them exactly the way they were. When I measure the voltage at the battery terminals I get 13.5 volts. When I measure using the + battery terminal and the - BMS wire I get 2.4 volts. Could use some HELP ! Thanks! Don

[@jodeluna62]

You Are Getting Good At Teaching Us Your Craft! Nice Video! Keep Up The Good Work! Lithium Ion And Solar Are The Wave Of The Future For Prepping And Camping. Next Step Is Like Hybrid Solar For Northern Residential! I Think That Is The Next Step For A Viable Hybrid Solar/Inverter Propane Gas Generator System, You Know For Cloudy Rainy Northwest Climits. And Long Winter Nights! Again Great Video!

[@chriseudy4684]

Bingo!

[@eloomin]

Very useful video, thank you. If you’re building a battery with new cells and a bms like this one. Do you need to bottom balance the cells like you would on used cells or just let the bms do the job?

[@xraykadiddlehopper8067]

Thanks lots of great info👍 Have you done a review on that MPPT charge controller in this video with the low temp protection? Just saw it on Amazon.

[@benjahben]

"this Is when science is fun" legend

[@dickvre]

It’s great to watch your videos. What is the small panel that you use to check the balancing ?

[@Randidly1]

Just found your videos, great stuff, explained where someone can understand it. I want to connect my 12v 60ah Lifepo4 to my RV instead of Lead acid, is this BMS safe enough just to leave charging through the RV system? Would you recommend any other safeguards? No Solar at the moment but am planning in the future. Randy

[@tabineshhtc]

Great video as always!!!

[@omaralvarado1080]

I just purchased two 80 A and it comes equipped with fan and BT temperature sensor.

[@davidallen4603]

Hi Will, Great video 👍 Do you think it's possible to build batteries with these BMS on each battery and then parallel these batteries together to increase capacity?

[@andrewfong4216]

Will, you need an infrared thermometer so you can show us how warm the components get.

[@davidarango2207]

Great video (a year later), do you know what BMS could enable a lithium battery pack to work as a Lead Acid drop-in replacement?

[@sgtevmckay]

LOL....I was born and raised in San Diego. Never say never about the cold friend. I remember back in 87 when we got 3 inches of snow in the Santee/Lakeside area. I remember Ice floating by the OB Pier in 83. North Island Bridge Frosting over in 86. Also, remember that California actually gets more annual snowfall than Colorado ;) Better to be safe than sorry, for a just a few dollars more the system can be protected from cold/heat (You teach this) and it may well be an unexpected benefit from time to time :D Great info...would be curious how it performs 6 months to a year from now.

[@WillProwse]

Wow that's crazy! I can't imagine that haha

[@sgtevmckay]

@@WillProwse It is rare and spectacular :D The weather has been fishy in SoCal for well over a decade now, but it will return, or so I believe ;) Better to be prepared, because I also recall 90+ degrees back in the late 70's on Christmas Day in the Clairemont area with the Santana winds. that was the start of the draught that lasted into the early 80's :P

[@chriseudy4684]

The Sarge knows.

[@lucbrousseau9871]

Hi Will, I love watching your videos, you make it fun to learn. I'm planning to build a battery with Lithium Polymer 3,7 volts cells (4 in series), they are rated 300 watts each. First question; what kind of power (amp hour) would that give me ? And second question; could I use this BMS 12 v 60 amp for that type of cells? I'm planning to connect an inverter for a 1500 watts induction stove. If this is too small, is there a stronger one that you would recommend ? Thanks.

[@earthenergyhex]

you're a smart dude

[@chriseudy4684]

Got a tempeture gun to point at the wires and connections more scientific and thermal imaging is fun stuff

[@jamest.5001]

I have wondered about the BMS, disconnecting from the controller, I thought about putting a resistor bypassing the BMS to controller, like 100watt, 10 ohm or something, just enough to keep some power on the controller, but in most cases, the controller is cheaper than the battery, and your house, if it is burned from over charged lithium batteries,

[@bkay042]

Got one of these a few weeks ago and didn't know it did any sort of active balancing til the other day. Never charged it up to 3.6v per cell for any balancing to take place (my assumption), but a week later of monitoring the new battery pack I find that the cells are 0.004 max difference. These metallic red covered BMS/balancers are great. I just finished building a clone of that battery pack tonight but used an HX-4S-F100A, which I'm now totally regretting.

[@LFPSair]

Brandon Kennedy I am pondering this 3.6v on spec too. Do not know how it does that.

[@bkay042]

@@LFPSair Have you confirmed this personally as well? I fast charged the pack to confirm it worked (one cell group begins to go up rapidly at 13.9v) and it shut it off. I was using an ISDT hobby charger though, so I can't confirm what Will showed (not borking his solar charge controller). I'd like to run one on my big LIFEPO4 pack in the back of my truck but it's even more sensitive due to used cells. I'd rather not fry my charge controller, and with my ISDT charger it completely halts all charging. Will's experience was different, and I can't understand how.

[@LFPSair]

I believed it does the top balancing at 3.6v only. I also noticed that it is very close to the cutoff voltage too. My charger will cycle between on and off once every a few minutes. Now I only do the bottom balancing manually, and shut off the charge at about 3.4v

[@Tranquilitarian]

Hey Brandon. I really want to buy one of these BMS’s. I however have a 15S battery, so my only option would be to use the 16S model. The one question I have though, is if it will work on a 15S battery if I leave the 16S balance lead off/loose.

[@Originalsunrunner20]

@@Tranquilitarian No. Daly BMSs expect all cells to be present. If it doesn't detect voltage on a balance wire, it fail safes- ie doesn't work.

[@Joe_HamRadioGuy]

Great information thanks for all you do, Do you have any videos showing how to program the MT50 to a deep cycle battery?

[@Hoganoutdoors]

Have you considered adding a FLIR type infrared thermography camera to your test kit? I ask because while all of your electrical data are gathered precisely, but your thermal data is gathered by touching components. Even a cheap IOS or android thermography camera will give you and your audience a much more accurate data set than your fingers. You'll be able to analyze the entire system thermally all at once with an image / video that looks super cool (so to speak) Anyway, great channel and great reviews. Keep up the good work!

[@FIGUEIRINHA]

if I am not wrong, I guess it work fine without the charge controller. using the solar PV panel connected to one dc-dc regulator CC CV and feed the battery (to charge it). and the load discharge direct from the battery.

[@mikejf4377]

When you are doing your initial connection to the Inverter what size ceramic resistor are you using? Thanks, been enjoying your videos.

[@evopwrmods]

I see your channel's name is "DIY Solar Power with Will Prowse"...have you considered other Solar Power Energy Harnessing Applications? Such as Solar Ovens ? Solar Water Heaters, etc. and also maybe some Physics behind Solar Power for those that are interested in the Science behind Solar Energy. Lastly maybe some predictions as to your thoughts on the future and where Solar Power / Batteries are headed. like in Graphene Batteries etc.... no Doubt Solar Energy Harnessing is our future, the path that we take going down that road is yet another matter entirely...thnxx for the info, you are quickly becoming the Solar Energy Source on KZbin....

[@bryantroll3499]

Thanks for the video! Is there a version of this for a 400ah sinopopy bank with 2000w inverter and corresponding loads? I need low temp charge cutoff protection too! Trying to work with an existing setup that doesn’t currently have any BMS installed. Thanks!

[@jimgopro9441]

Will thanks for your efforts in getting all of us on board. Question I have set up a 4s12V Daly BMS on 4 -280Ah cells. BMS will not let the attached inverter function. Do I need to “jump start” the BMS with a short burst of charge current from a 12V charger?

[@donald.oo.clariane1817]

U are the best

[@unglaubichuberlieber8048]

thanks for this great tutorial, i know there is a difference between chargers for Li-ion and LiFePo, so my question: is there a difference between bms for the Li-ion and LiFePo batteries ???

[@Interweb360]

Hello, Great videos I have watched most of them. I actually was looking for a new BMS and found this one online and thought about it. I have just bought some Miady 36ah batteries and was thinking the BMS needs an upgrade. Currently, they just have a tiny little non-heatsinked one that sells for about $4. Would be great to see maybe a video taking the cheap Miady cells and replacing the BMS or combining them in a new box with a new BMS.

[@Interweb360]

So the Miady batteries really overheat during load to the point they melted and weren't safe. I think the cells are okay but thinking of making a better battery from them with a new BMS and some cooling. I need to be able to drawn 35amps continuously peek but generally 5-20amp.

[@bnnb5560]

Hello, first of all thank you for your sharing and your different test, I also bought the same bms version 15A. It cuts well at 2.5 volts but it reacts to 2.51 volts and not 3 volts as in the description, so it cuts and reactivates the charge (a bulb for example) without stopping. Do you have this same phenomenon ?? Thank you Have a good day Benoit

[@donjohnson7732]

I am running two 24 volt LiFePo4 battery banks with two 320amp BMS’. We have it up and running. The only thing of concern is on the Ant BMS app one bank shows different SOC than the other. Like 93% and other bank might show like 26% or 37% SOC. Both banks showing around same voltage. I’m running solar charging. System seems to operating ok. Don

[@juanhernandez1238215]

Hi there nice video but could u use a battery tester to see how many cold cranking amps , your battery delivers, I was just wondering like how much cranking amps can this battery deliver

[@igorkvachun3572]

LiFePo4 60A/H Yes.👍

[@user-et2jp5yy8l]

Вы русскоязычный ? Нужна помощ.

[@telegraham]

Hi, Will. Have you experienced a BMS low voltage disconnect and then the BMS won't reconnect when cell voltages recover? I'm using the Delgreen 4S 100A PCM/PCB/BMS. Thank you.

[@freshykrueger8141]

thank :)

[@Sbellins1109]

Hi, i have a question for you. i have 2 identical li-ion battery back, each one have it's own bms that can handle 40A. Can i connect the 2 pack in parallel to have a 80A total output? Will it work or i will have problems?

[@hoosiercrypto9955]

In short. What do you think is the future? Solar is great. Ultra capacitors are really cool. Very cool. Make a bit of money. You are the future. Thanks, man 😁

[@WillProwse]

Lithium titanate batteries. Working on my first battery right now. 20,000 charge cycles. Should last longer than I will be alive. Video will be up in a month or so.

[@hoosiercrypto9955]

@@WillProwse .. Probably a stupid question. Did you pass the mensa test? I did in 89.

[@raidthebarn]

Thanks for another great video Will, do you think this BMS is safe enough for standalone use - or would you recommend a victron battery protect as an additional safety measure? My charging source will be my alternator using the 20A renogy DC to DC you reviewed, I presume this will do a good job to prevent overcharging as well

[@WillProwse]

I love adding the battery protect to everything. It's great for over current protection as well. Sell worth the money and a high quality little device. But this BMS can be use by itself. I'm still using it and it works well so far. I'm trying to find a way to kill it and haven't succeeded haha

[@raidthebarn]

@@WillProwse This is a great find Will, I just wish they made something similar with more conservative setpoints... 3v at the low end, 3.5 at the high end... something optimized for max cycles

[@tonyru303]

Thanks and excellent video. What is the amp hour for your battery?

[@tituslane4929]

Hi Thanks for the video about this. After a few months is it still working well? Any update? Thanks

[@CaptBill69]

Re: BMS choices: QUESTION: Is that a common pole BMS, or A separate pole BMS. I like the idea of this way of protecting battery as I study more for my 1st ever DIY 24v LifePO4 project. I need to study my BMS options a little more before purchase that part. I think I will go with the Daly brand S8 ...8 connection to each 3.2v battery cell.

[@wpinochet666]

Hi. Thanks for the videos. If I want to connect that bms battery pack in parallel with another identical bms battery pack to get 80 amps. Do I need an extra BMS that manage these 2 ones? Or the BMS are only for series systems?

[@dolelelek]

Graet video! what voltage does the battery have after charging, i have lifepo4 4s, 3.2v 100ah, after charging the battery is 13.4v. Thanks

[@petririekki4804]

Hi Will! Excellent videos! I would like to use 2p8s installation with one BMS, but what you say about using only 1 BMS? Could you recommend what kind of setup I could use to build roughly 400ah system? Problem is that I could not find any 400ah cells and 320ah is little bit too small for my application. Thank you!

[@Honor236]

Hi! I have a question I wanted to ask, if we are using the BMS then do we have to worry about balancing them at low voltage or connecting them parallel? because anyway each cell gonna get disconnected from the load at their set voltage right?

[@fisherus]

Will, I am using these on 40 Toshiba LTO SCIB batteries using 24S because I don't have to worry about low temperatures. I initially started with 15 batteries and Daly BMS'S I purchased direct from Daly and they were shipped to me in 8 days. Very fast shipping from China. I just ordered 25 more a month ago and got them in 7 days. The initial 15 have worked flawlessly in keeping the cells balanced. I can see no reason to use any other brand for LTO batteries.

[@Jazzboful]

I've learned a lot and love all of your videos!! Your story is also inspirational. I have a 110v, 30 amp RV. My battery bank has 12, 12v Eve LiFePo4 280AH in a 3P4S configuration. I'm running a 5,000 watt Pure Sine inverter. The representative only sent 1 PWOD 30A Charge, 30A discharge module which I'm not sure is optimum or even sufficient. Just fyi, I'm charging with a 60 amp Renogy MPPT and have 1000 watts/20V of solar panels. What would you suggest for a BMS? Also I'm finding that the bms's on Amazon have a higher discharge rate than charge rate. Since I have 1000 watts of input, 1000/20 = 50, wouldn't I need at least 60 watts of charge capacity?

[@hunter.on.channel.19]

Review on a 7s 60 amp smart BMS would be nice..thanks for the videos

[@WillProwse]

What chemistry are you using the 7s one on? Ohh smart BMS. Those are pretty pricey. I'll see what I can do

[@hunter.on.channel.19]

Yeah they're about $50 I'm going to buy one but I'm also using lithium-ion 7s 64p now but I'm extending to 100 B I'm using it more for monitoring I have the One S active balancers from AliExpress also coming

[@kareneighth6045]

Sold out on eBay

[@RobertMcniel-ul7yb]

Could you please post a video testing a separate port bms

[@brainrussell6811]

A no-BS, BMS review/tutorial... that's why we're here.

[@neilmayo6868]

Just saw you in Rich's latest upload, sweet.

[@WillProwse]

Oh cool!!

[@wkrp10splayer19]

hangin at evw with rr, jg and the boiz! upcoming vlog on that?

[@WillProwse]

@@wkrp10splayer19 no vlog, but probably hanging out with jehu more. We are both pretty busy though, but hopefully we can do a Livestream

[@makesaveinccomm]

@@WillProwse Where are you and Jehu locate? are you guys near San Diego, CA ? I can come see you guys do some project. Thanks a lot

[@mohammadyunas83]

Can you please tell me where I can find the settings to this specific mppt for lifepo4. I have CALB 100AH batteries. Thanks.

[@makesaveinccomm]

IMPORTANT QUESTION: I like that BMS Daly you show. looks like heavy duty. So I used link and they said Common Port and Separate Port. Which one are you using and what is the different ? Thanks very much ! Looks forward to your answer so I can buy right one. Question 2: Do you think the BMS 100 Amp Black and blue wire is bigger Than the 60-80 Amp BMS ? because I want to make 12v with that LifePo4 3.2v 50amp Blue batteries. Want to start the Honda Odyssey minivan v6 3.6L or Toyota Camry v6. Thanks

[@denisweber349]

Will, it seems to me that the batt. bank you built could output way more than 60 amps. Let's say you wanted to run a larger device (say that heat gun at 120 amps). Could you use a larger BMS to run it? I suppose if you did this too long or too often, the battery would degrade, but what do you think for occasional short time use - say 10 minutes at a time?

[@FIGUEIRINHA]

tanks for this video! it almost what I wanna do to changing my offgrid system. but I have some questions: 1. the charge controller are 12/24V and don't goes mad trying to guess with the 2 wires BMS? tracer empever manual say first battery then solar panels. 2. maybe a better option is the BMS with 3 wires. common, charge from mppt and discharge batteries. my guess is the 2 wires BMS is right to electric bikes. they only charge or discharge using it. 3. connect inverter direct to the battery work fine IF have some protection for over discharge. manufacturers love to stop em at 10.5 to dristroy the battery before disconnect. 4. I don't need any protection for zero degree. never happen here in tropics :D 5. afer some months everything gos on fire or still working nice ? keep learning, testing and increasing your evolution. it's the way in life!

[@travelingdruid1450]

Hi Will! Would you consider doing a video (or including in your solar book) a minimal solar setup where someone can run a window air conditioner for a short period of time (like an hour or two)? I have a pet and if I am away and the power goes out, I need an emergency setup where an air conditioner will run long enough for me to get back to the RV and rescue my pet to a cooler environment. The Kodiak is an excellent setup, but it is just under the Amp allowance for a small window unit so I am having to go a homemade route. I am sure there are many people who live in RVs who would benefit from this information. The big issue for me is finding/matching the proper soft start a/c with proper amps for the battery size/type. I wish for between a 10,000 and 13,000 BTU window unit, but perhaps an 8,000 is the max? Not sure. I do not think one would need 1,000 watts to charge a battery for rare emergency use - perhaps as low as 200 watts? I understand an additional setup of a notification system and a digital thermometer 120v plug is in order, but I do not request that part unless you wish (it would be nice if you did, at least in your book). If you are able to find an a/c that could run on the Kodiak for at least an hour, then problem solved super quick! Thanks much. p.s. I like how you and your channel have grown. You have become a helpful, nice guy. :-)

[@Donatus11]

Will, where did you get the terminals you crimped to the BMS to be able to attached to the battery terminals ?

[@mattrowe1229]

been watching a lot of your vids, if i build 2 sets of 12 volt battery's using 4-3.2 volt cells, could i charge 2 of these with one 4s 60 amp bms or do i have to disconnect one pack and hook it up to the other pack, or can they be charged together some how as one large pack

[@110609Isabella]

Great videos my friend. I just purchased 4 cells 200ah from ali express. I'm a litlle confused with what bms to get. Please advice

[@mertcapkin7263]

Where did you get the small screen that shows the amperage? Do you have a link? :)

[@ThisOldJalopy]

What happens after over current protection kicks in? Does it take a few seconds and then turn back on??

[@CraigOverend]

I remember reading of someone that used a version of these designed for a Chevy volt battery that killed the battery after an overcharge. You really need to test this stuff and not rely on seller information or datasheets. 2.5V is also low for cut-off. The cells will form lithium needle microshorts and then dendrites doing that often, and can then overheat when recharging. You always want a BMS with battery temperature sensing for this reason, I'm pretty sure there's a version of that BMS that comes with a temp sensor.

[@WillProwse]

The voltage specifications for this BMS are perfect for lithium iron phosphate and no other cell chemistry. I can't imagine somebody using the wrong BMS for the wrong chemistry. That would just be a horrible idea

[@CraigOverend]

@@WillProwse The person had these same BMS specifically programmed for Chevy volt batteries at the factory, and had no problems with most of them. Always test a BMS like you did before putting it into service. It may only take a poor or corroded connector to increase resistance for the BMS to get a false voltage reading and allow the batteries to overcharge.

[@WillProwse]

So true. Good point

[@mdnazmul-mianazmul1401]

Hello Good morning. Hey will prowse very Nice look for video. Thank you for your reply watching.

[@tiborkiss9186]

Hi, do you think if I make 12v blocks of li-ion cells and use one BMS to each 12v block, i can connect the blocks (+bms) in series, it would work?

[@judd_s5643]

I have been looking at that particular BMS for a portable battery for use with ham radio equipment. The biggest concern is RFI some of these devices produce. Do you have any guidance? Are these quiet? You might want to add a RFI test to your repertoire. You could set up a $150 spectrum analyzer with an antenna and just do a quick scan. This would expand your audience to the ham community.