Building DIY Powerwalls using PCBs v1.3

[@Psi105]

Pro tip. The other end of that multi-color ribbon cable will have tiny bits of exposed wire on the end. Even when flush cut. You want to avoid having the end touching anything.

[@RoccosModernLifestyle]

This channel gets better by the day, This type of project went from hard to easy REAL FAST!

[@johnfasching3387]

Your heat sinking videos how and what can you tell me what you're using is it on an iPhone and adapter where can I get it thank you very much I saw you all the time whatever you need whatever I can do let us know thank you for showing us all the way it's very very appreciated [e-mail]

[@richpalmisano1740]

Im impressed, was impressed before but this is what we were waiting to see. Start to finish build. Aeesome.

[@reginaldgage9162]

Thank you for all the information I have been watching your channel almost 3 years now. Every time I watch I begin to understand a little more about evs or better pack build ups. Its been 2years of me looking for the perfect bike to build I will eventually buy one and source most things from you or sites you reccomend. I'm glad I didn't jump in it right away because it seems tech is coming up faster than finding a Hayabusa in my area at the right price. I started collecting old laptop batteries but with all the information you give which I greatly appreciate is becoming much easier. Mostly I'll come out with a better build. I thank you brother and speak many blessings on you.

[@ecospider5]

I think heat shrink over the standoffs between boards might be a good idea. That way if you drop a tool or something you will not get a dead short across the standoff terminals.

[@bryzabone]

Ecospider5 agreed! Massive design oversight...

[@jehugarcia]

Clumsy people should wear helmets everyday, but to suggest everyone use them is extreme. Sounds like you are accident prone, take the needed precautions to stay safe.

[@jjjameson4712]

@@jehugarcia that is too funny but even really careful people can sometimes slip up. :)

[@robertharker]

You can crimp the connector with a vice. Be gentle closing the vice and do not over tighten. When crimping a connector you feel a stiff resistance at first as the connector bites through the cable's plastic insulation. Then it becomes easy to finish the last 60% of the crimp. You do not need to give a final "tight" squeeze, it only damages the plastic.

[@eliotmansfield]

Robert Harker Or even a piece of hardwood and hit it with a hammer if you are careful.

[@tapuzak]

Anybody know the name of that crimping tool on amazon? I have had fairly bad luck with my vice, too slow. Or a link?

[@photohotjock]

LOVE your channel love what your doing with recycling the battery's, so much that I just ordered 6 battery's for my vaping mod. thank you for the great way to save money, save the landfill, and support a small business. YOUR AWESOME

[@nickoblicko7046]

Love you're work mate. I am from south Australia and we pay an average of 35 to 42 C per KWH. Stuff like this is life saving.

[@deanauzzieevans685]

I'm in port Lincoln mate what part off this Australia you in

[@bryzabone]

Nicko Blicko look into HBpowerwall channel, and AveRage Joe for better, more consistent, reliable good info. Pete’s a great guy too (for a QLD’er hehe)

[@nickoblicko7046]

@@deanauzzieevans685 Elizabeth, Adelaide.

[@deanauzzieevans685]

@@nickoblicko7046 moved from john rice avenue to Lincoln five years ago hard to get a good supply of 18650 here

[@nickoblicko7046]

@@deanauzzieevans685 oh wow I'm just around the corner! Add me to your google I have a mate who does imports when I have the $$ going to make one of this guys systems. Small world!

[@randylenart9674]

Really like this system you can replace any part of it if it goes bad nice job 👍

[@Nguyening_music]

Mr. Garcia! Could you make a video showing us how to charge these battery packs with solar panels? I am confused as to how to set up the parameters for the solar charger correctly. Thanks!

[@mustache7675]

I second this, more importantly the voltage i have to input into the BMS module, will 24v do?

[@HolyShitAccess]

The BMS is doing balancing to each row of calls. To hook this up to a solar system all you need to do is follow a simple guide online and connect it to your charge controller. Connect battery to controller first then panels. Controller usually decides what battery voltage its at and should take it from there, if its a cheapo change its charge voltage cutoff and float for lithium standards and you guys should be golden.

[@nathanweibel4939]

When are we going to see a complete video on how to build the pack and charge the pack form solar using the BMS?

[@mrramz424]

Amen. I’m not an electrical engineer I’d like to build one and install it using plugged solar panels. But also would like to not burn my house down so I need step by step instructions from start to finish

[@williamh.2982]

@@mrramz424 same here Mr. Ramz. Great video but should go step by step on how to set up everything to run. So dummies like myself don't burn down anything... Come on man teach us...........

[@allant5436]

Your product is great and i've had a blast building my modules and testing them. They work great!!! I would also like to see more about your suggested wiring connections to inverter and solar setup's. Maybe also some suggestions on inverter charge setup (float and bulk charge), low and disconnect voltages etc. Thank you very much for the channel and hoping to see some of these video's

[@twogirlsandabird2095]

Welcome to the future. Good job, Jehu.

[@davegeorge7094]

Unscrew the chrome fan guards and get more air! No mod. is needed. Leave two screws in, keeps the fan attached, no need to take back cover off.

[@gzcwnk]

The chrome fan guard will have virtually no resistance / airflow impact.

[@creativecityis]

I like your idea to use multiple BMS systems. As they love to break... However running them at 50amps if one has broken. Anyway I'm planning to use multiple BMS on the e-bike battery's I will build

[@herbertwerner2287]

Nice build Jehu. I like this video. Good that you check the temps everywhere.

[@Ken-gx4pr]

Are you going to make the led Indicator Pcb available?

[@bryanwashington4082]

This is a great video! I love it!

[@AyoolaBoyejo]

I love your channel, please is it possible to get this in 4s?

[@brokepilot6969]

Thanks for the great vids & ideas! One question I had was is that matching the cell voltage really that important? I believe those BMSs have balancing functions on their own and if it doesn't the user can balance it via one of those BattGO systems. I think the BMSs balance because on the last video when you were testing the BMSs overcharge protection, it was supposed to draw 0 but the reason it drew like 10w is probably because it was balance charging the other cells. I think this can make assembly and battery health monitoring much easier. Anyways. I think these projects are great! Please keep it up the world needs more of this :)

[@davey2k12]

Be better with battery internal resistance match

[@glenngoodale1709]

Great info as usual. Thanks for keeping us up to date

[@simonac688.]

Thats batterie Art...just love it

[@shamsabraham]

Very impressive 🙏🙏🙏👌👌👌

[@kornshadow097]

Power walls are OK but I wanna know how to make a ev or improve my hybrid. What can I use to make a new battery pack? Do I use this or the battery pack method with the bus bars and individual fuses and bms in a plastic holder?

[@christothegreat1]

Jehu, you should install a 13 kW solar electric panel array on your roof, build two or three DIY powerwalls with these pcb’s, so all your home and electric vehicle charging needs will be met, even during blackout and to avoid expensive peak power rates during high demand times of day?!

[@VisualizeLeaving]

This video, single handedly, will be responsible for the rising cost of reclaimed batteries

[@thesmoothgoat]

Just hmu I get used 18650 laptop modules for way cheaper than anything can offer.

[@mindyabiznarc]

It's like looking for old rusty coins on the beach when you can order pre-rolled never been circulated change from the comfort of your home. Reclaiming batteries should be like Folk Art it should understood but that's about all. No one wants old under/over cycled highly unpredictable cells everyone wants the new LG Panasonic Samsung cells. Why would you want recycle batteries when you can get 60+ Amp rated 21700/26650/3200P/32650 up to 10,000mah for $1-$13 each wholesale. Headway 10AH 100A cells are $15-$30 why are people dumpster diving for old batteries with a few dozen more cycles left in them... Maxwell 17v "SELF BALANCING" Super Capacitors modules which have over 1,000,000 cycles are $150 each from Mouser & Digikey and people loitering trash piles when it's trash for good reason seeing as It's trash compared to New(0 cycle) Lifepo4 batteries PCB balanced with Super Capacitors.

[@VisualizeLeaving]

@@mindyabiznarc it sounds like a very small amount of money to you, but some people don't have that. I won't be dumpster diving, but I'm considering using batteryhookup.com for mine

[@thesmoothgoat]

@@mindyabiznarc A 10,00mah battery for $1😒 F**K off you troll.

[@greginfla_1]

What is the savings between used/new?

[@CajunGreenMan]

DIY Powerwall. Great idea! Keep up the great work!

[@jimthvac100]

Could you please provide the model number of the tool you used to read the infrared heat. Would it be a good idea to use a smaller wattage Grid tie inverter so as to draw power from the battery bank at a lower amp draw?

[@bennywijayaindo]

hi, thanks for the video, I already calculated if I want to build a 5kw powerwall, it seems the diy way is much more expensive than buying factory complete powerwall.

[@stirlingfromla]

What I don't understand is why he hasn't incorporated heat management into the system (A fan to turn on to keep things cool If they get too warm… To maximize battery life)

[@GarethJones-dk9yp]

Great kit. How much current can you push down the ribbon cables? I take each core can only handel a couple hundred millamps?

[@jaysonhernandez6728]

Where did you bought your voltage and current meter? Can you send the link? Thank you!

[@jjjameson4712]

Hi Great video, has there been any updates to the kit in the last two years?

[@jean-baptistep5709]

Hi, do you have a purchase url for the led kit? 24:52 Do you have a purchase URL for the Monitor ? 26:04

[@maxsnts]

Since the indicator show the level of a column and not the level of a board, If you have a dead cell in one of the boards, how do you know what board it is?

[@mountainlion4853]

Great teacher :D

[@austinmabry8462]

Putting your BMS in the center makes sense, but why then did you put your connector that is going to be used to wire additional packs in parallel on the other end? Wouldn't it make sense to have it right there connected to the BMS as well?

[@ParuparoMakina]

Straight forward and very informative. Thank you so much.

[@redandgoldfan3869]

how do the temperature readings compare between soldered batteries, spot welded batteries and this design?

[@alexandru-florea]

Nice and clean idea!

[@DarrellHughes82]

There is not a lot of info on these pcb systems..... Any info on the rainbow bms connector system ? Also the 7 line battery indicator board..... Does this show voltage on each of the paralell connected bms lines and do the bms lines paralell connect the cell banks ? Or is the battery indicator combining the reading for one cell from each board ??

[@randijensen3518]

Where can I get the state of charge board or is it in your kit?

[@niclas.lindstrom]

Hi , your battery pack design is great. My only question is about your balancing, as you check the balance between the serial connected batteries on each board if I understand your construction correct. But isn't it the balance between the parallel connected batteries that is the most important? So that the number one cell on every board should match, then all number two and so on... Best regards, Niclas (from Sweden)

[@ryancheesman400]

I s thinking the same thing. Seems like you would need balance across all, but that's probably a noob thought.

[@OldBillOverHill]

Well, here goes nothin'. I just finished population my first 25X. I need to assemble it with the BMS. I'm using an Outback Flexmax 60 MPPT charge controller and a 880 W solar PV array which has it's own SOC ability. I may need to go back and check the balance but for now I just want to get it working. I also have a Flexmax 80 and will eventually use it with another 4 panel PV array, for a total of 1800W. The cells I'm using are some pretested ones I just bought at the garage sale and a bunch from those medical 3.7V UPS packs. The next 350 cells will be from the scooter packs, for a total of 75X. Should be one heck of an off-grid powerwall system. These will replace FLA batteries. Outback has the program for Lithium chemistry but I still wan the extra protection of the BMS'.

[@Go.el_Hadam]

This content is simply amazing, I am excited for future optimizations to your battery system. You have convinced me that I can do this myself. :') Thank you

[@2hokie1hoo]

Helpful video, keep them coming!

[@christianperi]

I am looking to get rid of 40 of these boards that I got from Jehu's Website. I don't know where else to market them because people don't know what they are or how to use them other than Jehu's audience. They are all already built, just need to add batteries. Let me know if you are interested. Thanks!

[@jairtenatrujillo5510]

Really good video!! Best regards from Perú!! I undertand so so.. I Will use traslator for your videos :(

[@JoseAlvarado-bz2qq]

Nice work

[@carymcdonald6985]

Interesting 'stack.' The long Alodine stand-offs that are used as a 'buss' seems odd. Why? While Alodine is a 'protective' for aluminum, it's a chormate and remains HIGHLY resistant to electrical conduction. The threaded portions should be chemically 'de-plated,' if indeed that's a Alodine or Iridite coating.

[@yxcvmk]

What's the deal with *internal resistance?* On the used cells with around 2700mAh, there seems to be a resistance difference between 14 and 112? - as seen around 5:00

[@GregOnSummit]

What is the meter thats tracking amps, volts , and watts when he hooked the inverter up?

[@gmichie1]

I'm using the IMAX B6 80W Clone to check / charge my batteries. The booklet included warns against charging batteries with a protection unit. Do the batteries you are using have these attached? I see the indention at the top.

[@VoltageLP]

The most important part is to have the impedance of the cells within 20% margin of each other when matching them in parallel.

[@williambanks7519]

Can you give a little more info on the ribbon cable and the connectors? I've about gone blind trying to count the individual wires...

[@jehugarcia]

16pin idc ribbon amzn.to/3CSIp62

[@michaelc2644]

Quick question: On the battery module, what kind of metal is used to contact the pos 18650 anode and cathode? I am asking because I have read these types of modules typically use a relatively highly resistive metal that may be problematic to larger applications.

[@hoihoi1456]

Hi jehu, will you make the pcb files available? This way I would be able to modify and experiment and perhaps give some other usefull implementations for the boards.

[@narjolprado3223]

Great video I like your videos let me ask you can I connect those Harbor Freight rechargeable drill batteries and make a powerwall out of that

[@johnchr]

You should be able to, as long as you make sure that all of the batteries are relatively similar capacity as far as mah and voltage are concerned.

[@YourBroJo]

@jehugarcia I am a landscaper here in southern California. Certain cities are forcing my trade to switch to battery powered equipment. I all for it except, the lithium Ion battery packs are extremely expensive. Anyway you can make a video and help us out?

[@ayalaamaury]

It would be easier to charge them all first?

[@miniwarrior7]

Discharge them all first. You want the lowest amount of energy in these things if you're going to screw something up. If you have them all fully charged that would be major problems if you happen to accidentally touch something you shouldn't or flip something backwards. Talking about giant Balls of Fire

[@HolyShitAccess]

Just make sure you cycle them and figure out their capacity to pair them up better. Honestly i wouldn't worry about them being charged, just don't rush and make sure cells are the correct orientation and you should be fine. Plus you dont have to wait to charge the dang thing to see if its alive. To each their own, just take your time and you'll be fine.

[@jknowledgenet2748]

Hi jehu,idk if you'll see this bit I ordered a 100 cells off battery hookup the other day to start on a small powerwall.im thinking I gotta order another hundred and your 1.45 or75 kwh pcb kits. I forgot thes actual number but anyway it says it's for 175 cells. Can you advise me in exactly what I should order to have a good build when I'm finished. Do I only need the pcb kit or is there other things I need? That's really the question. Sorry I should know by now I been following awhile, I just don't want to screw it up bcuz I ain't got no cash to spare. Much love and God bless

[@Riddhi42069]

why the battery holders are not in 2 sides?

[@randylenart9674]

I'd like to see a 48 volt build that I could build for my cabin

[@francop2666]

Can one of these be used to create a power bank? Need one to power my dash cam while in park. Don't want it to run off my car battery. If this can be used to make a power bank can it be with a solar panel to recharge as much as possible? Can you do a video showing us how to build it? Remind me where I can buy all needed parts.

[@jjawads88]

how long it was running until fully discharge and at how much watts was the load.

[@ibrahimmamadydembele232]

I bought a worth of $1,000 batteries cell from your website just last week. so please If you don't mind my suggestion to please explain or talk about how many voltages, Amp do we get out this battery set right here. It gives an idea to the beginner like me to make a decision about what kind of KIT I need from your website. I am trying to go off-grid. I want to set up 25Kw to 30Kw. I want to buy your kits, but I am still trying to catch up on a lot of stuff that is unexplained in your video to help me make my decision based on that just as an example. please if you can make another video with little more details that will be great. Specially the Power wall that you made about Build a DIY Powerwall Using NEW Panasonic NCR18650BD cells could have little more details on that. I love the setting. very clean set up.

[@lifestylechangesolar5251]

Is the battery state of charge available now?

[@davegeorge7094]

I use a vise to press ribbon connectors on.

[@johns2590]

How do you monitor the BMS? A computer? or what is the interface and how can I get alerts if some value is outside something I set?

[@kamentabakov5302]

What about charging this pack? Let's say if I want to charge it overnight on the cheaper rate and use it during the day. Then what kind of charger you recommend?

[@jehugarcia]

The subject of a future video

[@bobsaturday4273]

no star lock washer between stand offs ?

[@thiagodamirage]

Verry nice... thx jehu

[@MaxGoddur]

How many cell and BMS boards do you need to assemble to end up with something like the Tesla PowerWall?

[@joshcosta423]

You may be explaining this in a future video but I'm curious how someone would go about correctly sizing their battery setup and solar setup based on their bills from the utility?

[@SidebandSamurai]

Pull a year's worth of bills. Add all the kw usage and divide by 12. This gives you your monthly KW usage. KW means Kilo watt or 1000 watts. Add 20% and that is how you size your battery pack. For Solar. Each panel is different. But you need the same number of panels that match what your average usage is. Add 20% so that you can charge your battery pack as well as be supplied by the panels. You must select a panel that has enough ampreage to add up to your monthly usage. You put pannels in series and parallel to get the desired voltage and current output. There is a lot of planning that goes into this. It is recommended your installation be permitted by your local city. Allot of math goes into planning. It's a lot like doing your taxes. You should have a basic knowledge of electricity and how ohms law works if you plan on doing this yourself.

[@tfergusonjr]

Got it. Can I buy 1 Battery PCB kit. Before I go full speed and buy 25 I want to have 1 to use for testing, etc.?

[@timbateman5780]

Hi, I have a really basic question. Does the number of wires in the ribbon cable need to match the number of batteries.

[@SidebandSamurai]

Jehu. Very good video. Can you go more than 7s. Say I wanted to make a 48v pack?

[@jehugarcia]

2 in series = 48v

[@JasonWho]

jehugarcia so connect the load side of another pack into the charge side of this pack, I believe

[@SidebandSamurai]

@@JasonWho I don't know that is why I am asking.

[@johanv4668]

can any one explain me. how there can be 1 , two or 3 bms boards parralel on that board. ? i am intrested to use bms in a parralel situation. does each bms have it''s own series of cells ?

[@hajjiwan23]

Jehugarcia how can you get me this kits am in Saudi Arabia

[@donvukovic7440]

What is used to charge/re-charge these batteries ??

[@christianlefler5240]

Great vids, bought some cells. Was wondering in all the builds you do...any issues with discharging cells while continually charging with solar charged?

[@ericcaldwell3584]

12:05 / 12:06 , 27:52 / 27:53 / 27:54 I really like that tune! Anybody know what it is? I couldn't find it listed in the video description at the time of this comment.

[@TexasSting007]

Can you surface mount these holders on both sides of the boards by bending the through hole pins?

[@acidtalons]

If two units are wired in parallel to an 80 amp mppt solar charger should a xt90 connector be used instead of xt60?

[@stevetrapp1095]

Where is the link to the state of charge meter

[@offgridlivingstlucia8865]

Great video

[@Riddhi42069]

how you get IR??

[@DergEnterprises]

Great job

[@ya7iaboy]

انت بطل يلا عليا الطلاق 💪💪

[@sygad1]

the ambient noise of you moving things around on the desk is VERY loud, a solder mat of some form of dampening would make the audio portion as good as the video portion

[@wloulittle]

Hi Jehu. I was ready to purchase some kits and the PayPal setup says you are out of stock on everything I tried. Looking to build a big system using Tesla's 2170 cells. I don't know if the board will accommodate this cell or not. What size fuse do you recommend for the 2170 configuration on the PCB. Thanks for any help... Lou

[@quevicular]

I watched a video on a guy who states that a BMS will ruin the battery pack earlier than it should and can leave you stranded in the middle of nowhere with no way of bypassing the BMS because of one stupid faulty chip. He also states that by charging these batteries to 4.2 volts is a huge no,no. 4 volts is optimum and will provide longevity. He uses RC chargers and can digitally monitor each cell for near perfect balance.

[@jehugarcia]

Sounds like a crazy guy

[@quevicular]

@@jehugarcia Nope. It makes perfect sense what he does. I will try and find the video to send it. Could be a game changer for you Jehu on a positive note. OK here it is.....kzbin.info/www/bejne/pp3NhI2ZetyWbrM

[@quevicular]

@@jehugarcia I think you have communicated with this fellow. So why are you not supporting what he does and teaching people this information??

[@bryzabone]

jehugarcia say what? 2 yrs ago you made fun of cheap Chinese bms’s protecting your expensive batteries. On THAT GUYS VIDEO! Now you’re selling and advocating um... 3 x BMS made where?! I recall you’re videos also saying you don’t NEED a bms... you are wildly inconsistent and the design flaws in this ‘system’ of yours will likely lead to a lawsuit against you. Good luck.

[@bryzabone]

ChiefJustice Middleton he was quite correct too, undercharging, and not fully discharging drastically increases life cycles... I’m as puzzled why jehu won’t acknowledge him as you mate

[@eclarkmx]

Hi Jehu, excellent video as always. I see that all your boards are designed to build 24V systems probably because that is what electric vehicles are working with. I'm trying to build the batteries and system for a Motorhome and are debating if to build it in 24v that would require me to use a 24v to 12v transformer or go directly to 12V. So the question would be if you have any of those boards to build 12v systems? A motorhome system is normally designed to have 100 amp hours but I'm trying to design something for 400amp hours for when I'm boondocking. Hope you can point me in the right direction.

[@jehugarcia]

kzbin.info/www/bejne/gaLCZqyej5mDaZI

[@ryanmeyer2118]

What is your experience with Samsung 18650 INR 18650 30Q batteries? I want to build a powerwall using "3S 25A Li-ion 18650 BMS PCM Battery Protection Board With Balance For Li-ion Lipo Battery Cell Pack USB Chager Module Lithium Battery Charging Lithium Protection Board" on WISH by placing the cells inside a 7Ah lead acid batter case. I am also interested in means that I can use to back feed into my appartment.

[@22BUCOI]

just a quick question. How you will Charge that?

[@MaxGoddur]

What does the charging circuit look like for this setup?

[@syedsuhaibhussain312]

Bro I would purchase this battery pack from I need 48v with at least 20ahm or more?

[@pepershots]

If I have 100 pss of battery’s in range 2200 to 1700 mah how should I put them into the holders. Higher capacity first ath the top and lower at the baton or opposites.?

[@diydan6045]

Check out repackr.com

[@matthewames9189]

Can anyone describe how the bms and the state of charge work? 7 batteries per board and 16 panels total. The state of charge show seven 7 digit displays. So is the bms that are in series configured to charge/discharge battery 1 for cell 1 on the bms? Also the plug on the BMS setup so that if it drops below voltage it disconnects?

[@williamh.2982]

These are for the made for 18650 cells.... Can the 32650 cells 3.2V 5000mah 15A (3C ) discharge 16 WH max charge 5A (1C ) 32mm wide by 70mm tall about. Fit into these modules ????

[@williamh.2982]

No the 32650 are bigger.. Do your research before posting questions .. Lol

[@biomerl]

My main curiosity with this is the safety. How do I know that the batteries aren't going to explode or cause any issues due to over or under charging?