You Can Build a DIY PowerWall using these Scooter Battery Packs

[@Jsut210]

Hey Jehu, I'm an engineer down in Texas - I can definitely help reverse engineer the bms on these units. Let's get in touch

[@OldBillOverHill]

Hey, I'm a retired engineer in Colorado, do you have a good source of schematics? I'm reverse engineering some other packs now. Looks like are using power transistors for diodes with the base lead clipped and just using the emitter/collector junctions. Thermal protection seems to be standard 65 degree thermisters. Darned components are hard to read with these old eyes and multilayered PWB's makes circuit analysis challenging. I worked for Western Electric as we brought the AT&T PBX's to fully digital class V. I retired from Avaya Bell Labs in 2001 as a software test engineer working on voip and ATM cloud development.

[@sams5803]

Hey Jsut210 what would it take for me to get you to help me design a PCB [e-mail]

[@dj13579100]

You will help us all

[@thomashillier6692]

Hooray from the UK Go do it.

[@janisvaskevics93]

We need a guy like you in Europe!

[@apat279]

Seriously i woulda bought like ten of these

[@kevinbrandwijk7146]

i would like to be that guy but how and where to start man

[@janisvaskevics93]

@@kevinbrandwijk7146 hard to source batteries to salvage in EU, and if you decide to import from US, our beloved EU will screw you with over 20% tax on top of shipping costs.

[@kevinbrandwijk7146]

@@janisvaskevics93 Yeah you are right for sure. I wanted to buy from batteryhookup but the shipping costs to the netherlands killed it for me so i just bought 28 laptop batteries for 50 euros last month

[@kevinbrandwijk7146]

@@janisvaskevics93 i even got some panasonic cells which just do 60 mah 😂😂

[@batterymooch]

Finding the BMS microcontroller chip on the board might help to identify which comm standard it uses? Or even a dedicated interface controller chip that communicates with the BMS’ MCU?

[@browndatuwwedu]

I'd love to try it, could be as simple as serial com or usb how many pins on that little connector, where can one get a good look ta the board and connections? 30 years service

[@gentlegiant.]

i winced when you put it to the saw but if you're able to cut the exact depth of the aluminum and only hit the rubber insulator then maybe you can just cut a window where the bms is located?

[@conormcmillan8666]

I am an EE up in SF. I would be more than happy to take a look at the bms design and see if there is any RE that can be done.

[@OldBillOverHill]

I'm doing this with the other scooter batteries now. My tests show they are in good shape but the design is such that the cells get out of balance. I'm charging them in smaller groups and then applying the charge to the entire pack after getting them all balanced. I found a great site that has a forum on it and found the data sheet for the LG batteries. They are typical 18650 2600aH cells. So to fully charge them you need to bring them to a 4.2VDC and hold that voltage at a constant current until they accept no more power. This is for testing and re-balancing only and the manufacturer recommends cycling them at less than the test values. I mentioned I use Outback MPPT charge controllers and they have a program for this chemistry. I'm amazed at the cost compared to stripping and building out the 24VDC banks. I'm going to use 18 of them with 20 cells each and that represents 900aH/3.2kWH of storage at an 80% cycle curve. According to independent testing they should have a 5000+ life cycle. Over 13 years if cycled everyday.

[@jamesturner2126]

There is a 5v and a 0v pin on the connector. If you jump the 2 pins with a high value resistor like 2kohm, it should pull the 5v down low enough to trigger on the BMS. It needs a high value resistor to prevent damaging the trigger circuit. I'm up here in San Francisco. I have 12 Jump Bike packs, and several other large lithium packs.

[@Tactical-Black]

Interesting

[@ericr4721]

None of the small wires read 5V, trying all small wires with 1k to each other and all possible external pins - found yellow to Batt+ or either small plug charge pin causes Batt+ to Batt- to read 0v versus 16v with all wires open. The 16v is not the battery bus because no current behind it and will not take input voltage. I Put 42 v to small connector charge pins and the BMS turns on and I see 32v on large connector pins.

[@dreamkiss4u]

I want to buy some packs but I also do not want to wait long to finish just making the battery pack work, how long will it take to have the bms work around for it and have it fully working battery and charging bms?

[@gemrough]

So are they 10s? I am debating on doing a huge Tesla project or building a bigger power wall (23kw now thanks to the Johnson motor batteries I got from you a few years back)

[@jehugarcia]

Yes 10s

[@peterkacandes5905]

I hope you can figure it out how to use them while they are still in the aluminum cases because using a bunch of them would be perfect for my motorcycle EV conversion project. I could put four in series and four sets in parallel.

[@robcul471]

Have 10 36v 30cells packs tried to wake up Blinking red light on battery pack small wire connection 1 out of 10 working if you. Have any ideas would be grateful help..

[@ericr4721]

Hello, got one of these scooter batteries you sold me, still in metal housing. Playing around it Seems like 42V into the small plug turns on the internal charger. I can see the large plug Batt+ and Batt- jump from 16v to 32 or so, plus it draw a decent current. Maybe just putting ~42input voltage to the charge input turns on BMS and chargers. A good BMS is powered by the battery, not switched on externally. Also the large plug leads look to be Batt+ and - directly not switched by BMS. Are you also seeing that with the opened ones. Was thinking those pins would be open until the BMS connects BAtt- to external wire.

[@ericr4721]

36.8V to the small connector does nothing had to go to 42, Also figured out polarity by checking resistance from small connected pins to large connector pins. One of the small connector pins reads connected to large connector Batt+ pin. So that is positive input.

[@diveflyfish]

Here is a question/ idea. Do you think that they ever use a Hall type sensor as a quick Kill switch on a BMS? If for a scooter, maybe this would be a hidden safety feature to prevent theft etc. I have built an underwater DPV and it is common to use a magnetic reed switch as a safety on off to ensure no accidental arming. It may be that somewhere on the BMS there is a hall switch or reed switch. Maybe a strong Neo magnet may just be able to happen upon the lucky spot for activation? It may be worth considering. If you get it to work I will buy two off of you for sure!!

[@concealed4carry]

What type or brand of schooter were they designed to work with??? If you had the scooter controller they would work as designed...

[@patrikd2776]

Okai model ES200

[@jpjay1584]

nice video!!! great source as always 10:49 pls lift those forks a bit if you drive. can get stuck quickly.

[@excite236]

It's turned off because the batteries are below threshold voltage. If you recharge them and there should be a wakeup button or something to bring the controller back online. You normally don't want to have them sitting around for long time without a charge. Love your videos, thanks.

[@ericr4721]

Jehu, can you post a wire plug/pin#/wire color/internal connection table for these? Also does it look like the BMS will open the B- or B+ to protect these? I ordered one to mess with but in a case so details from a extracted one would help a lot. I will also look into the communication for free. Do each of these have a charger on them, you mentioned in your video but that seem strange. Is it maybe the motor controller for the scooter motor?

[@robcul471]

Can you post wire plug pin # charging port 36v 30cell scooter battery 8 purple and 2 blue batterypacks

[@thadoviatt8087]

Wow this form factor would fit great into my e-bike charging stations. What are the physical dimensions of these battery packs with the aluminium casings?

[@SynthToshi]

can you do a portable bank with just one of these scooter packs?

[@mattgorney3107]

I would suggest leaving as much of the rubber on the scooter packs as possible and only cut it back for any of the soldering on those points at the end. Go slowly. I accidentally ripped off that black wire connection atop the BMS on two of four of these scooter packs whilst peeling off the rubber coating. Plus there are so many points to accidentally short or damage on that exposed BMS board.

[@joshuaspires9252]

i personally think it is really awesome that you have been selling all these epic battery's..

[@gustas6203]

Hey Jehu, how much it would cost to ship it to Lithuania? So, that I could play around with it and maybe figure out how to wake it up.

[@jonkelley6052]

I watched a video where the guy bypasses the negitive on the bms to the main negitive turning on the voltage. He explains that the bms is still working on the charging side. It does get the voltage on.

[@jehugarcia]

I wouldn't do it like that, the BMS would not be able to disconnect the pack in the event of overcharge or over temp, now its easy with these jag35.com/products/scooter-battery-controller-dongle

[@marine1718]

Hello I also have that king of battery what inverter do you use to 36v

[@kevinhendren9597]

I can help with this project. Would need to know the model of pack and or bms board model. Hands on test would be nice for confirmation. Just let me know. I'm in Indiana

[@akogepayo]

Hi Jehu. Is it possible to recycle a UPS battery?

[@james10739]

I'm not done yet but you said you have to cut them off but can't you pull each end cap off and push them out

[@jehugarcia]

no the potting compound is stuck to the casing

[@carmeloocasio3889]

Hey I'm located in Puerto Rico but you don't ship here is there any thing that can be done?

[@marcelopepito51]

bro i will ask a few question...it is ok if will make a 12 volts 100 ah battery pack using a old laptop battery but i will directly spot weld using nickel strip not a fuse wire plss answer?

[@jacobiejacobs8668]

Would you be interested in doing a rv solar system????? I have a 45ft diesel pusher and looking to put solar on it. Could make for a good video. Of course i buy all parts?????????

[@jehugarcia]

I would if I didn't already had 100 projects

[@Buddasticks]

@@jehugarcia check other comments for the wake up code of the battery .... Some one awnsered your call 👍👍👍🎉🎉🎉🎉

[@1991babyblu3]

Hey Jehu are you going to be selling the scooter parts in the other boxes?

[@jehugarcia]

Yes, just have to figure what they are how to use them

[@paulscott3266]

Can you post a close up picture of the BMS

[@qdubu]

Hopefully we can use these as portable backup packs to charge the Bluetti AC200?

[@jehugarcia]

Yes that’s a good application

[@techsir8866]

@jehugarcia can you do a video on the 24v 26650 LiFePo4 POWERWALL Battery Modules?

[@dreamboxx]

breaks my heart wen i see all this nice stuff only for the us market why dont you guy,s find a way to send it to europe

[@1gearwrench]

It would have to be shipped via cargo ship and would be very expensive. They cannot be shipped in an aircraft

[@paddy2661]

I'm Australia same laptops or powertools batteries and sick of pulling them down. Try finding medical backup batteries and surveillance camera backup batteries maybe, Dyson also , cheers.

[@dreamboxx]

@@1gearwrench cargo ship is cheaper than air just takes longer

[@brianbailey6212]

They're the batteries Uber pulled from the thousands of scooters they destroyed in June

[@therealromster]

@@paddy2661 I'm in Australia also and them laptop batteries, the plastic cases can be really sharp.

[@mulayaninc.7466]

I have been following your videos, I really wanted to build one since we are usually ravaged by typhoons here in the Philippines. I hope I can get some of those batteries 😊

[@jlis7723]

Hey I have a powerbank in a handmade rv using similar batteries. They go into a sleep mode, and wake up by applying 30v-42v to the charging port.

[@giorgioarmignacco1346]

i know those batteries , those came out from OKAI scooters , which (at least here in italy) can be rented from a company named TIER those things are built to be a water sealed tank anyway the small connector of the battery goes directly to the charging port .... nothing fancy there the big connector is both power and data from/to the ESC the data use the USART protocol (9600 baud ) apparantly the BMS sends his information back to the ESC , which it must responds , apparently that message is always the same and HERE scootertalk.org/forum/viewtopic.php?f=69&t=6284&start=520 they find out the exact pattern ( which by the way is 0x3A, 0x13, 0x01, 0x16, 0x79 every 5 sec ) there is also another great news the BMS replies to this message by sending back the current % of the battery ( and much more stuff ) so you don't need any external system to monitor the state of the battery you can leave the batteries in thei metal container and use them as it is ( which is pretty convenient because you can store them outside )

[@giorgioarmignacco1346]

hopefully this reaches you

[@Buddasticks]

This guy 👍👍🙏🙏🙏 for the cause ...

[@giorgioarmignacco1346]

Another quick start tip , the blue and green wire ( inside the big connector ) should be TX / RX of the battery , but I always get confused on this , so try swapping them

[@shaunbryson898]

Hopefully there not packs from there pay to ride scooters. If so then they may not be worth the hacking to get them turned on . only one way to find out! What ever it takes.

[@Buddasticks]

@@shaunbryson898 most likely from.the pay to ride escooters??? .... That's how he has so many??? ... From there decommissioned one ?????

[@PalinDynamics]

Hi Jehu, I am a computer engineering graduate student at the University of Kentucky. Me and my roommates (electrical engineering students at UK as well) would love to take a look at one of these battery packs. Let me know if we can help!

[@Nettle314]

i´m asking because i´m genuinely interested to learn: Why do you use these batteries over say LiFePO4?

[@jameswyatt1304]

Vehicular use prefers LiFePO4 to other lithium chemistries because of charge/discharge rate, duty cycle, etc...

[@Nettle314]

@@jameswyatt1304 right - but these batteries in the video are NCR18650, right? Not LiFePO4 I believe? Thank you!

[@alphabeta898]

The black plastic connector should be able to pop off with little force they are usually not held in by anything. Beside the inard pins force.

[@johnreyfrancisco4373]

Wow your Wearhouse is like a heaven for me

[@patrikd2776]

Program an Arduino to send the 0x3A, 0x13, 0x01, 0x16, 0x79 every 5 sec at 9600 baudrate to the blue wire to keep it from shutting off, it replies through the green wire.

[@carlos_sacalul]

Hi,can you send me 4 pcs of thoose? Are for my solar? Thanks in advance

[@scrappycoco686]

Just got subcribeto your channel I'm from the Philippines your really cool in DIY everything.

[@TifinDragoshP-]

Hi, Jehu! Is it possible to buy a lot of 1300 batteries by your links which would later be shipped to Europe(Romania)?

[@jehugarcia]

Yes

[@hectororozco3963]

How can I buy these modules send me the website where I can buy it tks jehugarcia

[@marcscsiwcom]

Electrical engineer here. I just ordered 4 of these. I will let you know what I find on the BMS.

[@theman56]

did you record what voltage the batteries arrived at? if so what was the voltage/ have you had any issues with the batteries?

[@williamh.2982]

You say 36v system. Can they be used in a 48v system?

[@illgottengain3329]

Started bing watching your channel!!!

[@benkennes9276]

Does anyone have any tips purchasing batteries in Europe? Havent found a reliable supplier yet.

[@Kktokuka]

Electronic Engineer here, would love to help with the reverse engineering but I'm from Portugal

[@mikebissonnette7115]

What is your website please?

[@icedragon923]

I would love to get one to tinker with. Im in louisiana and highly motivated. On disability so buying one would be dificult but would try to get some. Ty

[@moviexp7866]

We would need someone that sell things like this in nigeria, I can't get a hold on this type of battery...... Help!

[@BenBrand]

When will the can controller board for the older scooter packs be back in stock?

[@troyc3]

I just purchased 4 in the case and 1 w/o case so I can help reverse engineering the communication bus, I'll email you if I make any progress

[@JamieMayes89]

It's a shame you're not in the UK I could definitely help you with these plus I would have been interested in purchasing a few too.

[@qasimibn-akanni7199]

Hi, got some cells here in london if you can help with setting some up you can have some as well . thanks

[@JamieMayes89]

@@qasimibn-akanni7199 Hi, I'm sure we could sort something out send me an email at [e-mail]

[@garrettscott4094]

I am so excited for these. I love the aluminum cases but if I am going to make a power wall with them I guess I don't need the case.

[@Rookie7916]

How much is an honest price to pay for 24V 200AH BATTERY PACK? WHATS THE BEST BATTERY TO USE AND HOW MANY BATTERIES WOULD IT TAKE TO MAKE THAT? I AM TRYING TO BE ABLE TO RUN AN AC WINDOW UNIT 5000BTU IN MY CAMPER TO BOONDOCK. DO YOU SELL SOMETHING ALREADY MADE? WOULD YOU BE WILLING TO MAKE ME A BATTERY PACK? I WILL BUY FROM YOU BROTHER.

[@kylebolton8915]

Does anyone know if the R5 pack BMS has low voltage protection?

[@buckh6233]

Ben Heck Hacks might be worth reaching out to, he's done a number of rare game system repairs and modifications. seems to know his stuff. and he's local here in Wisconsin

[@kaseymorris2242]

Hey where can I purchase one of these batteries

[@jehugarcia]

These would be them jag35.com/products/r5-r-series-36v-12-8ah-460wh-ebike-scooter-battery

[@anthonymann392]

Very Nice I Need To Make A Power Wall

[@thomasdesloovere4200]

Hi, I am an electronics engineer and i think i got enough stuff laying around my house to get these going because i already made a lot of recycled pack working that i get from a scrapyard and i build them a power wall so if the power go's down there is some thing that happen quite a lot around here there systems don't crash because there the voltage spikes to 500v and then dies so we are trying to relay as much as possible on battery's so we have a lot of different power protocols that we use like for example can. If you want some help please contact me.

[@FraLin]

i can find 100 scooters per day on the street, so how is the best and fastest way to transform free batteries to a powerwalls? I need a 20kWh 48Volt for my solar inverter. I don't want to take them apart, just use the existing wires and BMS.

[@leonelalbertolinzmeyer9597]

Você é o melhor de todos 🏆👏👏👏✌🏻🤙Perfect ⚡🏄

[@madaxe79]

Wish you would ship internationally

[@davidoneill2466]

great show

[@sams5803]

JEHU I need to be apart of this! It is my dream.

[@Watchyourcreditscore]

I'd love to tinker with one or two of them. I am in Arizona.

[@undergod1987]

I will say this.... these are probably the best 18650's I have bought from JAG35... however I will caution you if you guys are purchasing these to harvest.... getting them out of the plastic Holders... it’s not as easy as it looks. sure, cutting the BMS off is easy enough. but since all the empty pockets between the cells and in the plastic, holders are all filled with that rubber... it is not easy I did damage a few cells in the process ☹ THIS IS NOT A COMPLAINT I PROMISE... these are very good cells. all tested to be as described. I just thought it would be wise to let people know. thank you again Jehu, you tend to be the first place I purchase Second Life 18650's from.

[@riccardoperuzzi99]

Hey Jehu. I would be glad to help you with those packs. No problem with communication protocols. I'm graduating in Electronic Engeneering and I'm head of the Electronics of the Formula SAE Team here in Perugia(we are currently designing our electric prototype). Yeah, I live in Italy, I don't think that you can send me the battery packs to reverse engeneer them. In any case if you need any help with MCU programming or PCB layout just let me know

[@tradersalt]

@ 00:09 I see you got a pallet of those Bafang front hub motor wheels! Maybe you can make a 4 wheel go kart out of those.

[@shaunbryson898]

May have spoke to soon but lets find out what it will actually take. Do I need to order some myself just to beat everone to the punch? Jehu lets get cracking!

[@lifestylechangesolar5251]

Going Green Jag35 👍

[@georgesjanveau6047]

I Wish you could ship these into Canada!

[@stevemyers2092]

me too

[@andrewlidums3491]

Hi I believe one can ship Lithium batteries between Canada and the US as long as it's in a device. The scooter batteries are encased. This is off Canada Post Web site. Lithium metal and lithium-ion cells and batteries installed in or packed with equipment are mailable via air or surface transportation.

[@MrM4Goo]

Mark Hall 1 minute ago Hey I built a 2kw system for my pool it's run off 2 400W solar panels ,if u send me some ill build you one too ,I like the safety aspect of it as you don't have to worry about them catching fire due to the aluminium enclosure,I added a simply board to stop the battery at a certain voltage and start charging and one to stop overcharging, I can supply the aluminium enclosure for each pack , I even use one for my lighting in my workshop , they are amazing

[@thamer9600]

Hi jehu nice video

[@egidio6david0]

Bro how you feel about the great reset?

[@greghoggett2624]

Ship international please!

[@r380]

someone can tell me, what kind of rubber of that?

[@lj516]

They are potted for thermal efficency

[@leonelalbertolinzmeyer9597]

Jehu, eu sou do Brasil, você poderia fornecer células recicladas de boa qualidade para meus projetos ? Muito obrigado 🙏

[@alanjohnson21]

just saw new batter look like my battery pack on a2b 26" hybrid ebike by ultra motors

[@iforce2d]

Seems like everywhere I look these NCRbd are being 'decommisioned' en masse and very cheap. Of course I'm buying a bunch myself, but I have to wonder....

[@scotthuson7679]

Hi Jehu, I'm a computer engineer and have the equipment to give it a shot. I'm aiming to make a device that uses the pack so it doesn't require any cutting. I live in Boston so I hope that's not too far away.

[@christopherbetancourt6105]

I took apart the bms on four of my packs you need these bms let me know I'll send you the bms so you can test them..

[@MonbogDecan]

Hey,I ordered ten. need some help programming the arduino to turn on powered thru the rx cable via serial. It would be great to also read the tx output to find out battery voltage amps and other good info. Can you help?

[@NANA.PANPAN]

I'd love to help out the community, I've got the tech to pull the comms channels and see how we can open these puppies up.

[@Full_Throttle_no_Brakes]

I'd buy 10 of those batteries if you ship to Europe. It's a shame you don't. @jehugarcia Do you have any plans to ship to the EU eventually? Thanks

[@Vo0d0o2009]

i just hope they have not a microcontroller like makita that bricks and tags the whole setup as BAD , makita use non reprogrammable counter chip that not yet been reversed ( and probably will never because when the ic is in this bricked condition its a one time Write on is part that cant be writed back to a non writed bit *OTP* one time programming ) , i would like to help you to bypass this microcontroller because after all the controller just shut off the BMS circuit , unfortunly im from canada i can only help from there lol , if you can only give some descriptions of majors IC that look bigger than a normal bms , give us the ic number and i will search it out for datasheet for you for free ! then with the shematic of the ic that control the bms , its a step , your video have explain more than i was ever asked for , it will be a manner to me to thanks you for your sharing hi from quebec canada did this ''rubber '' have the weitht and texture of typical rubber or its more heavy oily and skin like ? , color look like sylver-oxide thermal pads that i SAlvage under sustain boards of somes plasma tvs if it is , its some build of quality what you get !

[@Vo0d0o2009]

a silver-oxyde thermal layer around the whole system under an aluminium casing , look really possible after all

[@蔡华盛]

how much money？

[@Vrgb]

🧡

[@biff1tannen]

Wow!! Want to buid my 1980 Toyota corolla to an Electric car.

[@pulesjet]

Damn still not completed the last scooter packs . Think I'll grab set of these in hopes they can be awaken.

[@shaunbryson898]

Its simpler than you think. If you can get a few packs to utah I can give you detailed instructions in a few days at most. I'm willing to show you how if you would be able to kick down a few packs for my scooter builds I have going for winter . hit me up. Shaun Bryson

[@shaunbryson898]

They are just waiting for the conntroller to tell them to turn on its easy to find and bypass. Ive been building and rebuilding scooters and trikes.since 2012 And this is somthing. You run into a lot. Especially when your building a ride from an incomplete scooter and have to improvise. Check out my facebook page facebook.com/shaunbryson1 and the videos I have are some of my current trikes I'm building this winter.

[@MonbogDecan]

Hi did you get any answer? I bought ten and will try the serial communication over arduino to be able to turn on power over the RX line via serial with arduino... but want to do more and get to read the voltage from the cells coming from the TX cable.

[@rodolfomatamartinez9463]

Hola yo puedo revisar lo, y dar algún dignostico, soy ingeniero en electrónica...estoy en Monterrey México... saludos

[@frankiepezzolla]

Bro where do you get all your money from lol, i envy you having all these batteries

[@tht1guyfromtht1place70]

How do i purchase some?

[@jehugarcia]

On the link in the description

[@dayoffdiy3161]

I have a damage battery in my electric scooter. Can you help me sir.? Brandnew battery is super expensive. I can't purchase one..

[@briandesilets8425]

How much does each intact pack weigh?

[@jehugarcia]

10lbs