DIY 48V 20Ah lithium battery without a spot welder using Maker Batteries

[@EbikeSchool]

I hope you guys enjoyed this video. If you want to learn even more, I hope you'll consider checking out my Amazon #1 Bestselling book, DIY Lithium Batteries, available in paperback and ebook formats. a.co/iDtWdPX

[@candisbrendel7396]

EbikeSchool.com who showed you how to cross your 7's like that? my german teacher showed us in class, did you go there or see it somewhere else? I have one leg, I am in a wheel chair. did you do a wheelchair video? we mean, how to make a regular wheelchair electric? if not could you? that way we could copy it, I was a machinist until the leg came off. Col videos so far!!

[@airlmaz]

hi man! you have 6 pieces in a parallel.!! а это 17100 mah

[@EbikeSchool]

They are 3400 mAh each, so its 20,400 mAh total

[@KingCrabGaming1]

EbikeSchool.com hey, the motor I want to use pulls 20.83 amps, would this 20 amp be enough since the difference is so small?

[@EbikeSchool]

Amps and Amp hours (A vs Ah) are two different things. The first is more equivalent to power and the second is more equivalent to range. This battery can output 30A, so yes it would be enough.

[@gymkhanadog]

Clever way to respond to what is I'm sure a huge influx of people screaming at you "DON'T SOLDER ON 18650 TERMINALS!" Keeping the heat spread should help. I'll add my own 2 pence and say you should (probably) alternate soldering joints until you're done. Solder one end of the pack, and then the other end, then back. People who work on body panels for cars do this to avoid warpage of panels and to keep from blowing through the metal. Tack weld one area, move no less than 4 inches, tack, move, tack move. What you end up with is a panel that is warm, but not burning hot in any one area. I can see the same principal applied to these packs.

[@Lordbaccus]

Dude you Glossed over so many IMPORTANT details!

[@gyurterd8922]

for PEOPLE LIKE YOU, WE CAN EXPECT A BETTER WORLD. THANK YOU MICAH!!!

[@andrewzanas9387]

Nice job. Watched a few battery vids by others and cringed when giant threatening globs of solder were melted and slapped on top where they appeared they could easily short out individual cells, and wires were moved about before the solder had had a chance to set up. I like the nickel ribbon application using a spot welder to make small battery packs and use the ribbon to disburse heat and isolate the solder from the battery. Makes for an efficient assembly of larger configurations later. Also a big plus, a neat professional looking final package. We can live with soldering whole strips of pre-welded batteries. With solder alone I'm guessing there's an increased risk of creating cold solder joints. Cold solder joints mean a mechanical joint formed but electrically it could very well be anything from a high resistance connection to an open circuit or, as you pointed out, resultant heat damage.Was the finished product charged and tested for load balancing before you shrinkwrapped it? Do you not recommend shipping pre-charged batteries? What charger and display do you recommend using or including with a package sale? What brands and configurations in battery chemistry have you tried? Right now LG and Panasonic seem to be the top brand favorites for all standards of measurement. Sorry about all the questions. There's a lot to the learning curve and it's going to be big business down the road. Your video was extremely helpful. Thanks for this. I will def check out your other videos.

[@TerpDaveW]

GREAT video. Excellent technique and final result. Thanks for providing a source of materials for avid DIY people like me!

[@sr8shoota]

I'm sorry maybe I missed something. These packs look spot welded. Do you get the cell packs pre spot welded there for the title?

[@guytrimble8171]

He sells the rows of cells already spot welded.

[@Redblower]

Thanks for convincing me to get a spot welder.....

[@anthonyfortier8765]

LOLOL best comment

[@1DumbSquirrel]

@@anthonyfortier8765 yeah this is all things you should not do lol

[@dirtydoge756]

This definitely puts in to context why already-made batteries are so damn expensive. Especially quality ones. I wish I had the patience or confidence to do something like this.

[@michaelkreitz]

What is wrong with all the people posting hateful comments? Micah is trying to help the DIY community and this is how you react? Shame on you...

[@gymkhanadog]

It's the internet. More specifically, it's the KZbin comment section. View it like a cesspool. It's mostly shit.

[@fidelvc]

Can you make a tutorial for 48v 20ah battery pack triangular shape?

[@samuelspacey710]

Shame? Shame is when your bike bursts into flames taking your house with it because of a short.... facts do not give a damn about feelings when it comes to house fires

[@cutty02]

yup unhappy losers like @Samuel Spacey are what make places like youtube a cesspool. Pessimistic losers

[@Freeknickers24]

fidelvc perhaps you should make a comment not a reply to a comment for you questions that are legitimate.js trying to help

[@mrkeopele]

really great demo., beautifully built battery! I'm wondering whats the cost diy vs retail pricing?

[@CodySmiley]

Thanks again, I always back here to have sure im doing it right.

[@gideonlapidus8996]

Good one Micah, what about using copper strip pieces with the correct current rating?

[@ПавелГрешных]

Great videos and impeccable quality result!

[@saikrishna-mh9hi]

Thats a cool looking pack. I think you are very good at spot welding. Your videos are pretty informative

[@ronhammant7309]

Easy to see why readymades are expensive, wish I had the enthusiasm to do this.

[@royfitzsimmons6226]

Hi What BMS did you use for this 48 v 20 ah battery ?

[@awengirr]

Thanks for the video. How can I charge it without a 48v charger?

[@ShimonKupferman]

אם אני מבין נכון, אז לפי מראה השקע ברקע, זה נראה שצולם בישראל, ומן הסתם על ידי ישראלי הקורא עברית, לכן ארשה לעצמי להגיב בעברית... עבודה יפה מאוד והסברים ברורים - כל הכבוד על המיזם הייחודי, ושתהיה לך הצלחה גם במיזמים העתידיים שלך!

[@drrelaxxx1666]

Fuck off

[@markwingfield7704]

Excellent video bro may even check out your website . How do you calculate how many feels per pack like how many series and how many parrelle

[@Tony0THUNDERCAT0Reynolds]

Did the strips come ready welded, as the video says "without a spot welder"

[@EbikeSchool]

Yes

[@takismail]

this guy is a hack.

[@johnconrad5487]

so why lie in the title? also generally 18650 batteries are about 2.5 A-H and u have 6 in parallel so that makes it about 15 A-H and you called it 20 A-H.. for 20 A-H they all have to be 3.3 A-H. so now is that also a lie? you have 13 batteries in series so that makes it 48V which is what you called it. is the DIY your sales outlet?

[@EbikeSchool]

+John Conrad - Relax, they are Panasonic 18650B cells and so they are 3.4 AH each, meaning the total pack capacity is 20.4 AH. The title isn't a lie - you don't need a spot welder to build this battery pack.

[@romanf5666]

@conrad: I guess you have other problems, call a doctor

[@wisashelanobamoll8633]

Good evening, very nice and instructive video, thanks. , I have a question, can i use a 16s bms on a 15 row battery and just leave one connection blank, or is that not going to work out?

[@frankcrawford416]

Dude! I'LL just let you build the batteries. I am not tech savvy I guess. Great presentation. Thank you.

[@jobmariano348]

Very helpful. But is there any budget friendly 18650 batteries. Please 🥺 help. I want to make my own battery too.

[@FREEHAND.WETGRINDER]

You are a big help I am struggling with an Alibaba.com battery. Ever thought about a q and a video? I was sold Sanyo batteries but now I’m told I have “generic famous cell”. I don’t know what they means but performance is incredibly low output. What to do???

[@gaznijan1602]

Love it... okay how many miles it can provide.

[@uptono8475]

Có tất cả 78 viên pin, loại 3,7 vôn. Ghép song song có 6 nhánh. Mỗi nhánh có 13 viên mắc nối tiếp (13×3,7v = 48,1v). Vì mắc song song nên số vôn của nguồn ra là 48,1 vôn. Thêm 2 Diod chống ngược cộc với một tụ bù, 1 Transitor ổn áp 48v và 1 ngỏ để sạt pin. Xin cản ơn Ad !

[@warlockboyburns]

Battery cells with high resistance like liitokala HG2s are acceptable for large capacity 20ah packs like this because larger capacity packs have less resistance than smaller ones. I have a 48v 10ah liitokala pack which doesn't perform great so I'm going to wire 2 of them together in parallel using a dual battery discharger converter adapter. I think if you buy large capacity cheap packs and only charge them to 80% it's better value and probably lasts as long as packs using pricier cells, the only down side is it will be 20% heavier.

[@Jcslim138]

Would two of these same packs in series make a 96v 40ah battery ? Also mind doing a video on two of these in series or two packs in series in general

[@jewitdawel1877]

I guess in serie it would make a 96v20ah battery but im not sure. Im new to this. I thought series is dubbling the volts and parralel is doublin the Ah

[@alidalkus3853]

@@jewitdawel1877 yeah you are right. You will need 4 times

[@shavkat84]

Hey Mike i just received my batteries , I checked voltage all batteries from 3.45v to 3.50, my question is should I fully charge them or i can start putting it together?

[@brucesweatmaniii6030]

you guys welded the first strips? Why not weld these strips too? Save time and make sure you have a better connection.

[@grumpy19631]

Ok that was very cool!!! Fine job. I have to get your books

[@facelessvaper]

Amazing - nice to see you up and selling your kit - I got really excited and headed straight over to the website, shame, I live in the UK, its a good job I don't need a battery just yet however I foresee the need in the future as I think my hub motor will out last my battery and at around 600 USD for a quality made one (or so they say) I am looking at other options! Keep up the good work

[@Thechist781]

I’m thinking about building one. My only concern is about how safe doing this would be. I don’t want the thing exploding between my legs or burning my house to the ground while in the power outlet recharging.

[@guydrukman4344]

Can i make it the same way just with 5 batteries each cell instead 6?

[@luisgamito8376]

you have video of a step by step construction of a 20s14p battery with bms assembly?

[@rlwings]

Great video, thanks! ... But I'm confused about something. Why so many strips? Wouldn't one strip connect 2 rows because everything is already touching each other?

[@Stiffler1109]

Disclaimer: I'm just guessing...know very little about the world of DIY battery making. That said, I wondered the same. My guess is that the thin strips of nickel might overheat if there were only a couple. Maybe dispersing the energy evenly and with greater surface area might just be better craftsmanship of that kooky DIY'd battery, dramatically reducing the risk of a strip overheating and melting. And I've only watched the vid once, but if there was only one or two connection points and one breaks, the remaining single connection might then have all the current running through it, causing it to melt in short order, resulting in catastrophic failure of the whole batt. I'm undecided as of the moment whether I'll DIY it or buy a premade. But one thing I'm not undecided on is my confidence that a battery failure as the result of going for a good *long* ride on my 48V 1,600W Uberscoot would likely produce a situation whereby there's precisely ZERO scootage yielded after the battery is toast, manifesting the consequence of walking the 80-lb Uberlug a considerable distance back home. I believe they weigh 117 lbs with the lead acid batteries. I'm guessing (again) that a lithium batt weighs 40-50% of the guesstimated OEM 50-lb battery bag. Conversely, I like the idea of a battery whose energy flow between cells is widely distributed, keeping cool and thus keeping its lifespan and health as a rechargeable battery nice and high and long.

[@leecurtis6]

Hello do you have a website that You sell batteries that you’ve built? Or is it only DIY packs? Thanks Lee

[@qusaytime]

I have an electric bicycle with a 250 watt 36 volt motor with a 36 volt and 10 amp battery. Can I switch the battery to 36 volts and 15 amps ..?

[@JesusChrist-sx1lf]

13S6P battery? So these are 3.7V 3400mah per each cell. That sounds.. Expensive ^^

[@calyfornykid]

You need to explain what side is the positive and negative are going to be soldered.

[@a.i.5673]

how did you get 20 ah out of 24 x 18650 cells ?

[@TheResoluteMind]

alex iva I think there were 78 cells right?

[@azimzain1211]

Another great video Micah..what BMS did you use in this project?

[@runningwithscissors7715]

both your 36v and 48v kits are out of stock..will you be geting more ? when?...i liked the video very informational...

[@Techunboxs]

Which cell is better Samsung LG Sony Panasonic

[@BenjaminEsposti]

I still prefer the Tesla (car manufacturer) style batteries with the fuse wire on each individual cell. Safer that way in case one cell shorts, the fuse will blow and prevent other cells from discharging into the shorted cell.

[@6969smurfy]

nothing is save with Lithium... that includes the tesla's, hence the power wall cancellation!

[@gymkhanadog]

No, Powerwall was not cancelled. At least not as of a few minutes ago. Powerwall 2 is currently available on Tesla's website. The 10kWH version was discontinued in favor of a 7kWH Powerwall, which was then re-upgraded to 10kWH for PW2. Also, the DC version was discontinued because of reasons I don't fully understand. And 18650 batteries are actually really safe. Look for any number of videos of people abusing them and purposefully trying to make them explode, catch on fire, etc... They have enough capacity to be useful, but are stable enough to prevent things from going horribly wrong in most cases. Note, MOST. Even Alkaline batteries can be dangerous if you mistreat them, so let's not lump all lithium techs in as being automatically "dangerous".

[@gymkhanadog]

Yeah really! I watched a video yesterday of someone who built his own Powerwall and accidentally shorted a contact while changing some equipment, while the thing was fully charged and at I think 40kWh capacity. It blew all of the wire fuses on the last pack in the chain. Probably saved the guy's life, or at least his hand and arm from severe burns. Those fuse wires did their job well!

[@runcycleskixc]

my thoughts exactly. Also... not sure if this is possible, but can one make individual cells replaceable by avoiding soldering altogether, and marking failed cells by LED/no LED

[@runcycleskixc]

nothing is safe with gasoline, either, or any dense source of energy.

[@BrunoPOWEEER]

Hey Micah, really cool DIY battery kit... super easy and very quick to put together!!! Perfect for people who are just making one of few packs and don't want to spend all that money buying a spot welder!! AWESOME work... I just bought your book from Amazon as well. I got the printed version =] So much POWEEEEEEEEEEERRRR... haha

[@mikethomas6051]

Morrre power bruno!!

[@toobmon1]

INTERESTING VIDEO AND COMMENTS... did any of the viewers actually use this info to actually make an ebike battery? Anymore tips from that?

[@txsraappraiser]

A power wall user was utilizing several 4.2 volt packs and combine those.

[@MekazaBitrusty]

I was just wondering about your earlier comment. You said measure all the packs to check they have the same voltage. What do you do if they don't?

[@EbikeSchool]

If they come from Maker Battery, then they should all be the same. But if you have cells that aren't the same voltage, you shouldn't use them in parallel. Either charge/discharge them until they match the others, or find other cells. Putting two cells in parallel that have drastically different voltages can be dangerous, as the higher voltage cell will try to rapidly charge the lower voltage cell.

[@grandpaobvious]

This is the most important question in the entire thread.

[@czarzenana5125]

Before soldering or spotwelding any packs or cells it is always good to use a load to equal the voltage of the cells or packs of cells.

[@9001greg]

@@EbikeSchool Actually same voltage doesn't matter, unless they're "fully charged" what matters is the internal resistance which can also be tested. You can have a half dead battery and a fully charged battery that are the same voltage (3.7). That would mean your "fully charged" battery is garbage and your "half dead" battery is not fully charged which would be around 4.18 - 4.20 volts in a healthy battery. Comparing voltages after fully charged and sat for a few hours, you should see them around 4.17 volts. both batteries being around this means they're probably decently healthy. Though it still is irrelevant to whether they should be used in parallel or not. That's what internal resistance is for and why it's important

[@prof8957]

Great video tutorial! Have you built one using LiFePo4/32650 batteries for 48v/20Ah?

[@estevendejesus7400]

I was hoping you could help me out, I was trying to make a battery pack but I am having trouble finding a seller on ebay that wasn't trying to rip me off. can you post a link to where I can find these specific batteries in your video?

[@Afmu]

Hi Micah, what kind of tin do you use to weld the nickel tape? 60Sn/40Pb? What combo is the best for this job? Good and clean work you made! Congrats and greetings from Spain.

[@billybbob18]

I would use Kester rework flux on the solder points and use lead based solder for a faster melt at lower temps and a better joint. This is DIY so you're not selling lead free products to consumers. This is the same method used by the military and NASA which should speak to the quality results. After using Kester products for over 5 years, I can now understand why military engineers rave about it.

[@GoldenSim27]

got one and want to say a big Thanks! for making these kits available with great instructions . I am not afraid to try and build it my self, but since i am a complete newbie , this kit with pre-spotwelded good quality cells with everything included to make it ,including video instructions was Perfect! saved me a bunch of money, time and able me to make one in the shape i desired , keep it up man!

[@prakasanlohithan7691]

Great presentation ..............................

[@RyansMarket]

One question. How do you locate and replace a bad battery if it goes rogue or reverses polarity or something? I’m not sure the what the chances are of that occurring, but isn’t it beneficial to be able to service the batteries? That’s one major advantage I see in your modular cell building kits.

[@TheCrazyCartModChannel]

What a freaking fantastically fun idea🎉😂❤

[@robertmotion]

Great video. Question, my battery is 48v 20ah. My controller is 48v 20ah. Manufacturer upgrade from 20ah b/c none in stock. Will this combo work? Heard it could damage battery. I use PAS too when riding. Hope you can help. /Bklyn👑

[@artfree-spirit7214]

Micah, is it safe to hot glue cells together like that? Should I get cell holders instead if I'm concerned about safety?

[@murdelabop]

What are the assembled dimensions of your 36v kit?

[@edwardhenshaw2540]

Great video. Very informative.

[@christopherbetty5017]

Mike, I have 3 52v battery pack that is assembled but not sealed. How can I make it into 2 72v battery without disassembling them?

[@conradritchie2236]

Could you do a video on how to make bottle shaped battery packs.

[@mikakorhonen5715]

No no no, this is not about energy drink called Battery.

[@georgegaw7809]

The 6 pack module looks like prewelded, positives welded together and negatives together. So each cell voltage must exactly or precisely the same, otherwise the cells with higher voltage will charge the lower ones. Please correct me if I'm wrong. Thank you.

[@mikakorhonen5715]

Does it matter if using only new high quality cells? I understand if using getting cells from random laptop batterys...

[@thehighriseconstructionob9679]

Those batteries are spot welded 6 or 8 in low to biggin wirh?

[@israw]

on another video you suggest NOT to solder a 18650 battery but you are soldering in the video ?

[@Wadu-hek]

Please be safe while doing this guys. The serial cells should be separated and or insulated better. In fact all the cells should be separated by at least a 5mil space. Batteries holder work well. Also the bus bar also be separated from each other. They are so close in the series. Also also that fuse connection from the bms to the positive end of either of his groups of batteries should not not be that thick. If your system is rated for 20 amps peak and 15 amps nominal only use a fuse that matches your battery amps if your batters use the nominal 15 amps then your fuse must be at 15 amps to prevent over voltage and burnout. Let's say it peaks over 20 to 21 amps even for 10 secs could be enough amps to start to overheat your little 3.8amp battery. Even in parallel. But if you keep the positive lead only rated to 15 amps the lead will burn off first saving your life and batteries. And that's only output. From battery to source not source to battery. God imagine if you plugged this in the wrong solar set up

[@Mizziera992]

How to make 48v 30ah or 60v 33ah? How many LifePO4 32650 batteries will I use? And what BMS capacity for 48v 30ah and for 60v 33ah? Thank you for your support.

[@SuperVstech]

Nice kit, but any chance you could sell a kit that includes all BUT the batteries?

[@murph55]

nice video, but as a maker of d.i.y. battery kits could you make a plastic battery holder where just about anyone could construct a battery

[@techtricks5553]

Fu ckh you

[@amosclark9048]

Exactly!

[@Lea-ww9hf]

So, you don't recommend solding direct to the battery?

[@grantgre]

So on your website two batteries cost $10 how many do you need for this project? It looks like you need 12 or more batteries 12*6 72 *10 =700$ ??????

[@deshawnmichaelson4161]

Ive been told that GM found they could dramatically improve Lion battery life by making sure they never get hot. Why no heat sink ?

[@Stiffler1109]

I might be stretching it to say I have only the most basic knowledge of batteries technology in me brainium. But I do know a thing or two (like Farmer's) and I believe that the main cause of heat whenever there's electricity flowing is too narrow/small of conductive wire or connection relative to the current flow. I cheap extension cord will heat up if running a 20 amp vacuum through its thin, poorly insulated wires, right? Maybe the many connections of nickel strips between rows of cells helps disperse the overall current flow, thereby keeping each connection relatively cool. Or...maybe it's just that most electric scooter/bike folks aren't subjecting their scooters to prolonged, daily use (like an electric car), thus the technology of said batt just doesn't need to be optimized. What brought me here was a 48V 1600W Uberscoot whose lead batts swole and (I'm assuming) caused it to...not go forward anymore under its own power. Nothing more than a blip of energy and it's done. While between my son and I, we've probably ridden the thing a total of less than 5 hours since buying it a few years ago, in opening up and inspecting the original lead batts, they're all swollen. Is that indicative of overcharging (leaving charger connected for days) or just cheap Chinese batts or just age...or all of the above?

[@johnibeh9183]

Can you charge the battery with an inverter

[@jeffjefry2873]

Hi...I have 48 volt 8.7 amp and got problem the bms not working ...I looking bms for that ..my ebike diamondback overdrive exo..I need you help...thanks

[@kounaabdessadek1638]

How do I choose the right BMS? Thank you

[@doms6741]

Is this cheaper than buying one?

[@701theboop5]

Great video thanks for sharing your information,

[@prosptsfitness]

Such a great channel 👍

[@burhankabadayi4692]

Hello there. Lithium Batteries with different amps when using the battery, does it make trouble to use different batteries? Should we fully charge and recharge the lithium battery batteries? is it okay to charge without finishing? How to use longer life How should we follow a path. 2.Which device should we use for amperage test on the batteries? Do you recommend Litokala lii500?

[@mikakorhonen5715]

You should use same type cells for battery pack for long life. Lower than 4,2V charging voltage and not driving battery empty will give longer life too.

[@jasonhughes6417]

Hey, a question... these kits (and others) don’t accommodate any fuses between cells. Other videos on here have quite complex bus bar / fuse configurations (often soldered directly to the cell cap). Are such inter-cell fuses important / advisable / unnecessary / definitely overkill..?

[@ScottL-w7g]

What would it cost in materials to build a 30a 48v battery for my scooter? Do you do custom builds? This for my scooter, they charge $400 for this battery which seems way too much.

[@occhimoore]

Do you sell the battery pack already assemble, or just the kit? I don’t have the tools to put it together, and even if i buy them it would be for a one time use.

[@dina_roberto]

is 78 pieces enough to get 48 volt and 20 Ah??????

[@alidalkus3853]

Yes possible. That's exactly what he did in this video 13s6p. 13 times 6 =78

[@sultanmahmud6921]

What kind of charger is suitable for 48v 100ah battery pack?

[@sekaf4125]

Very interested. I have 3000 miles on my Aventon Aventure. Do you have a kit for that?

[@ilangovanNTK]

How many kilometers running this method battery

[@rocheuro]

is it safe? -

[@johncarlobernardo866]

Is bms required to be part of the circuit sir or its optional?

[@michaelpaulino1881]

What BMS did u you use?can i have a link where i can buy it?

[@mopuccino6025]

Just great video tutorial..and good alternative if you don t own a spot welder..anyway this says it all about the whole process wether you start from scratch or the pre soldered battery packs...why not ending the video with the charging process ?just to make it complete for noobs..thanks a lot guys ,this helped!

[@speedysense3777]

You used 3400mah batteries, can u guide me how can i make it with 9800mah batteries? Same 48v and 20ah battery im intended to built

[@levelup90sapparelco.69]

Can i see your 9800mah battery?

[@JonnyTeMoni]

Price wise, is this significantly Cheaper than a say?, $800 dollar batter from an Ebike company?

[@WestTexasSmallTown]

You don’t need a spacer?

[@abramzacharias1]

What battery size? Lithium iron or Lithium ion? Not enough information in the video

[@josephserrano3875]

Can i ask this simple question how much is the life cycle of this battery pack

[@BTRflorida]

what about charging? do all the batteries charge the same amount? I thought you had to have some kind of electronic board so they all get charged the same? thanks

[@WiljamiHei]

how much would it cost if i buy it ready made?? for my eletric scooter 48v 1600w??

[@franciscourena5636]

Great presentation I have an e- bicycle 48 Volts, 750 W, 15 Amp I would like to get an additional battery 48 V, 20 Amp Question If I follow your instructions and build it, How can I attach it to my e- Bicycle?