That was amazing. Thank you. I have been a survival concept person since the military, I love how you tackle a project. looks like that fit like a glove well done. Beautiful Sir.

Huge fan Micah! The ebike world needs more people like you.

RJB 1 second ago This is one of the best elemental and straight forward DIY battery building tutorials that I have experienced to date. Very professional and considerate.

Excellent Micah. Your method of teaching is precise showing every step of the process for building a custom battery pack. I really enjoyed and much needed this video to help with my project. Thank you for sharing your knowledge!!!

I'm over 60 years old and just found your channel. It was very interesting and I am glad I found it. I will admit that it was not easy to follow but nothing new ever is. nice work

thank you so much.. im looking forward to buying or donating for the book.. 1st class presentation... I was just blessed with an apartment...(low income) Formerly homlesas since 2017. When my honey went into eternity . R.I.P (Angelina Dennis. So i'm determined to show the world, especially those down but not out; how to Recycle what post covid throw aways. I've worked very hard on scavenging parts for over 2 years, and hiding them in various places. I just moved in 2 weeks ago, and i just retrieved my bike frame, closed my u-haul space. and evenlost almost everything i stored. But I was blessed to hold on to the bike frame , the motor, and the failed 36V battery with bms. All this is so new and exciting to me. People are laughing when i tell them "I'm building and electric car upstairs" Your video was the first of its kind To address the complexity of E-batteries. I was way off, thank u for real clairity. 10 toes down info... Poetry Seattle

This was fantastic! I build/convert bicycles to electric in Denver, CO and my plan is to also build decent batteries to fit in the frames of client's bikes. You are a huge help in my education! Thank you!

if you're building larger odd shaped batteries (like 16s12p) where you need the positive and negative in a specific spot I suggest using a SAT solver or some mapping algorithms to build a graph with minimal nickel strip use. I kept failing to do this on paper efficiently until I just put in the effort to encode it as a SAT problem.

I don't regret subscribing to this channel because am also an 18650 geek.

Micah, thanks for making yet another great DIY video for us all to learn from! These are the types of quality videos that we have all been looking for, with the in-depth explanations and quality video for us to follow along with! You are an inspiration to the entire DIY ebike community!

I'll most likely never have the stuff to build a battery, but man what a cool video.

Dude you're so smart. I'm excited to build my own massive LiFePO4 battery

If you know what you are doing,not a problem, I can only follow the video, a quarter of it, the rest , I just ease my mind....but truly grateful to you Micah, gonna try out making my own battery pack since my ebike company don't have extra battery for it.

I hope too build my own batteries soon. Thanks for all your help

Finishing your DIY battery book and getting in to project!

You are amazing! I'm learning how to do everything in my E-Bike with you... And I now know even more than most of the sellers just by your channel xD

Nice layout process and I liked how you broke it down to where they were in sets of 3.

Best method for building battery packs with uneven shapes..........very informative video sir.....thank u

You're a great teacher. I just built my first rectangular battery and will be doing a small reserve odd shaped one.

This hobby started out as saving for an already built e bike, after saving up and doing lots of research, I found it easier to build my own, and now, I find myself watching how to make the batteries for the e bikes lol. You can say im addicted, without ever being on an ebike cuz of indecisiveness.

Nice build and good explanation. One day I will make my own battery packs.

Thank you for your informative video. A bit over my head, but i am just learning and you are a good resource.

Really cool video. Came across your channel after reading your book. Great stuff!

Enjoy your videos and guided on how to build these battery packs. I plan on building me a 18s 6p battery pack to get the maximum power and range. Also will be building me a 4 wheel bike from scratch to put it on.

Yea! You’re making this very easy!

Hi could you make a video about how many cells and parallel/series connections to make battery's of various common sizes, for example 36v, 48v, 52v and 10ah, 20ah 30ah ? It would be so informative for guys like myself who are new to this and trying to learn the basics of ebike battery building. Great channel by the way I've learned so much already

Hi you are doing really great job and educating the ones who are curious to know and learn about lithium cells and packs. I would like to ask you the below doubts 1. If we are using protected cells in battery packs still we need bms in pack. 2. Please give more light on cell charging cycle and life. If we are not discharging to minimum voltage and charge before that is it going to increase life cycle.

Excellent video, I really appreciate the effort and attention to detail you put into your content. I'm really starting to follow your videos as I'm looking to make a larger 48V battery pack with more max current output for a large PMDC motor scooter project. I'd love to see a video for something with more power than an e-bike! Keep up the great work!

Another great video Micah. BTW, I had a copy of your diy battery build book on my laptop that decided to check out on me last week. If I'm lucky enough to win I'd prefer a hard copy so as to not have to risk losing it to electronic failure. Thanks and keep up the good work!!!

Very Useful to see how you can max out cell count and still be safe on current load. Would love to see you build (2) 6s batteries without BMS; just balance wires so you could use a cheap 6s balance charger. Then show them connected in series to overvolt a 36v battery to to 43.2v

Love your teaching bud

Thanks a lot! I love watching your videos, i learned a lot! God bless!

This is really well explained, thank you. I wonder how much heat builds up in these foam and heat shrink wrapped packs during charging and heavy usage especially under high outside temperatures. Can this reduce the life of the packs and what options are there to help keep temperature at optimal levels?

Thank you for another excellent video on battery building, the gaps in my knowledge of E bike battery building are slowly but surely being filled, regards Doc Cox.

Wow great video. Love the attention to detail. Your the man 🤜🏻🤛🏻

So helpful thank you. I've been wanting to try making my own battery for a while.

That's an awesome idea to add a pull handle!

Another awesome "HOW TO" / "STEP BY STEP" video from Micah... ohhh yeaahhh!!! You rock dude!!! =]

I love your presentations. You make it simple to do. Thanks!

Thanks so much man... I have learned so much.. I hope to see more of such videos

Great video very informing visual is so much better for me

Micah is one of the best! Always good information.

Thanks Micah. Great easy to follow presentation. There is an agent for those cool click in holders here in New Zealand so I'm going to buy a set and build a booster battery for my e-bike, Thanks again. Now I know how!

This is the first time I have Subscribed and commented on a video. I really enjoyed your video (easy to follow) and links. I am confident that I can now take on my battery assembly for my multiple 4H robotics projects. Thanks so much.

Great job Micah - You make it look so easy - Thank you

Diy lithium batteries. Love your videos. So helpful!!

I'm in two minds whether to use 18650 or 26650 batteries on my build, the basics for the build will be the same - its mostly a question of cost vs size. At the moment - I can source a 26650 for £5.95 (4500mAh) , whereas the cheapest LG MJ1's are £5.05 (3500mAh ). I'm on a tight budget - I intend to get both the books as I'm sure this will help me build my project cheaper. Great videos Micah keep them coming =)

Wow bro im so impressed with the way you wrap your batteries effortlessly, and you slide your packs in perfectly! I bet you have no problems strapping rubbers on either... when you want to, errm discharge your own batteries ;p

Great video fella, keep up the good work👍

Great info. I just started harvesting batteries to make big cells for a laser project. I need to learn more about the way they are joined in series or parallel

It became from an ugly shape to a very cute shape. Nice job !!!!

Thank you for step by step demo!

Good morning, great job, I'm crazy to win this book !!! I'm Brazilian, and I'm watching all your videos, very good parabens !!! Two years ago I'm riding e-bikes. Thank you for your explanations !! Big hug friend....

Wow this is a cool video... I think I might be drooling

Excellent video!

Well done video. I am very impressed with the information and delivery. I will be using this to aid me in building of a battery cell pack for my e-bike. Thank you very much for a well delivered tutorial.

Great video, Micah, you're a great source of info for the DIYer. Many thanks, Adrian.

Really nice video. I am looking to build my first ebike and the videos are helping a lot. Thanks.

Old video, but the down side with hot gluing is that if a cell fails, you have to break everything apart.

Great video! Just one point: not sure if this was already addressed in the comment (didn't read the whole 231 comments...) but when you add a second nickel strip to "beef up" the connection for a cell that's not directly connected to the next group of cells, you did effectively double one of the parallel connection. But shouldn't you also (or rather) "beef up" one of the series connection ? I mean if cells 1 and 2 have a direct connection to the next group of cells while cell 3 has not, you beefed up the connection between cell 3 and cell 2 but you should also beef up the connection between cell 2 and the next group of cells. If your pack must provide 15A and you only have 2 nickel strips for series connections, each strip will carry 7.5A, which is still acceptable for a 7mm wide and 0.15mm thick nickel strip but at the top of the acceptable range. So basically, rather than doubling a parallel connection, shouldn't you just double one of the series connection instead?

Needed information thanks for making the books available.

This is exactly the video I was hoping for next! Thank you Micah!

I’m planning on 52v - 17Ah with GAs that will sandwich the down tube because the main triangle is too small to fit them all inside. They be encased in a poplar frame with ply sides.

Great video - you just sold me on both of your books and every tool you used - you make it it look fun and completely no-stress! (is the spot welder 110 or 220)

Quick tip: Solder the balance leads or the discharge wire onto the nickel strips and then spot weld them to the batteries. Hence, no heat to the batteries.

Smart and cute little battery pack, lots of things learn from your video. In India price of 18650 cells are on higher side, so dropped planning of battery pack. Even varzend not provide 18650 lgmj1 cells in india

very helpful for begginers..

Fantastic. Wonderful How to Video. Thanks For Sharing Micah.

Your videos are simple and direct to the point. So much to learn from it. I have an electric scooter with a brush motor, its rated 24v as it uses two ups lead acid batteries rating 12v 10A each. Can i run the scooter with same battery rating as you have built here?

Very well done and informative. Thanks for an invaluable presentation!

Hello. I have 3 beautiful questions: 1. Can I use battery holders instead of connecting the terminals of a battery cells, then join the wires + -? 2. Is it necessary to use BMS while the batteries can be pull out and being charged with Li-ion Battery Charger? 3. Can ESC used in RC projects be an alternative to manage the outgoing voltage and current of the battery? Thanks in advance for response!

Oh yeah and I want to buy that book

Very nice!!, now i need to find a bigger bag for my 48V battery

So glad I found your videos there so clear, do you recommend scraping from laptop batteries or buying for best results? You've got my sub .

i enjoyed this video. I am explloring opening up a 36 volt lithium battery i have that i know has one or more cells that are not charging or are low charge.. I am thinking of getting the DIY lithium kit to put it all back together. I also want to sort out creating a USB out port for the pack to recharge cell phones etc. And I am also xploring builing a 5s or 48v pack for the same ebike to give me more speed. .. perhaps also building 2 packs to i have increased range capacity when i need it.

Sweet job!!!

Thanks for the videos, I picked up your book too. Time to get started!

You did a great job explaining what you were doing. I like the details. So you are saying these batteries can pull 5amps. Making a 48v and pulling 25 amps for the motor would be 5 in a row. Maybe 6 to make it saver? I will be watching this one again soon. Thanx buddy :-)

is direct welding cells touching eachother safe or are plastic snap together brackets worth investing in?

Very good HowTo, why do you use a BMS and not a loader with balance lead support?

Cool. I would be very interested in reading your books :)

Wow these videos you make are really helping. keep it up!

Awesome video

Cool! That answers a lot of questions I had floating around in my head :D

this video is very beneficial to beginners keep it up

Hey mate, you are doing great job. I will love to make my first ebike with the purpose of primary way of transport. Already watched all your KZfaq videos and hopefully I can get the book. Thanks a lot for share!!

Excellent information. I love your videos. Thanks ever so much!

Hi Micah, by the series bus. Are those fuses because the series connection are alternating but these things goes between those 3 parallel cells. Could you please clear on that. to be more clear I am talking about the 8 figure like connections of the Nickel strips.

Hi, nice video! I'm a mechanic maintenance technic in a company called Coficab, and i have a Honda NSR 125 R, with 30 bhp and broken ignition. You gave me the idea to de ICE'it. I guess it would not be so hard to do, i would need a 20 kw motor, a battery, a charger and a drive...

Great concise info enjoyed your DIY Lithium battery book a great resource, cheers

I like your video! Thanks for helping us layman understand lithium batteries and their construction. Now for my question :-) I have a newer Smart Electrician(Menard's Brand) LED light with a Samsung 3 cell 11.1v 2200mAH 18650 pack that won't take a charge any longer. I couldn't find my charger for several months, and let the batteries probably get too low. I was told that I could possibly bring them back to life by charging them with a older non-lithium Ion charger for a short period of time. Is this possible, and if so what would would recommend for voltage, connecting, etc. Thank you, Al

I got some 9900mah 18650 from amazon that price wasnt bad.a bank with them would be alot higher the standard batteries.i noticed that most battery packs use a cheap battery in their packs which seem to have lower mah rating.if you simply change your batteriee with these higher rated batteries you can double your capacity without adding any more batteries.wish i could post screen shots to show rhe defference between the batteries

Thanks Micah, this is great info.

great video! thank you so much!

Is it really helpful to have so many layers on a lack consisting of a bunch of metal cylinders? It seems like you are making an insulated oven and wouldn't the heat generated in the cells shorten their life?

Hey man I like your books sound like u really know what your doing the diy. Book

Please explain the power/charger connections for the BMS again.

How did you know what strip you are gonna use? What calculations? Where did un get the 15amps?

I have a question about how you decided which nickel plate to double up. It made sense in your drawing and initial explanation, but the actual pack you made doesn't match the drawing as far as where the double nickel strips are

Brilliant I wish I could do that maybe one day ☘️🥃💚👍