Readers Comments (50)

  1. how can i upgrade this to a 48v 50ah battery can u explain please?
    my mail id

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

  3. john carlo bernardo April 5, 2021 @ 11:44 pm

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

  4. This is such a cheap trick, if you wanna sell your shit do it properly

  5. girls generation AMC April 5, 2021 @ 11:46 pm

    How about its charger? Can i use my old charger not from a lithium batt

  6. April 5, 2021 @ 11:47 pm

    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.

  7. Dude you Glossed over so many IMPORTANT details!

  8. dunia elektronika dan kreatifitas April 5, 2021 @ 11:48 pm

    Form Indonesian 😉👍

  9. I want to make battery pack for motor having 48 Rated voltage and 92 Amp continously current by using samung 18650 -30 Q cell ( 4.2 v max volt, 3.6 nominal voltage , 3000 mAh , 15 Amp continously discharge current )
    11S6P Or
    12S6P Or
    11S30P Or
    12S30P .
    Which one is correct please let me know
    Thank you

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

  11. JB particle of light April 5, 2021 @ 11:52 pm

    I want bye this

  12. mark vincent bacus April 5, 2021 @ 11:53 pm

    how many pcs battery in 60v 45ah in battery pack of electric scooter?

  13. Jan Lemonte-Elwoth April 5, 2021 @ 11:56 pm

    Great video!

    This convinced me that I need to build my own pack.
    I got a Zoomability or a Zoom Uphill from 2019 and it comes with 2x 48V 10Ah LiFeP04 and they’re no good at much.
    Range is poor and the power delivery drops not long after you start to drive and if the temperature is less than 10 deg C, they are terrible.
    I have two empty battery cases to build in and your support would be much appreciated.

    inside dimension of each battery case is 275x130x60mm, and I hope that it will be sufficient for +20Ah in each case.

  14. 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

  15. 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?

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

  17. You are a big help I am struggling with an 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???

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

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


  21. Voice Of Insight April 6, 2021 @ 12:02 am

    I found the battery in the link below on ebay, they are Li-ion batteries, is it a good idea to build a bigger battery from them following your method above? If it’s not a good idea, why not,

  22. 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.

  23. Hey, j’ai fait une vidéo en français si jamais il y en a qui ont du mal ^^
    Si vous avez des questions n’hésitez pas je sais que c’est frustrant quand on n’a pas une info

  24. the Milwaukee M18v red 12.0ah used on Milwaukee power tools? As I’ve came across 5 of these bnib & im keen to know if there suitable for Ebike battery build.
    Being Milwaukee (a decent) brand name I’m assuming the cells should be decent cells? There 21700 cells high discharge, are these suitable for a decent battery build?

  25. Enrique Moreno April 6, 2021 @ 12:07 am

    Can you make a 48v 35ah 2000watts please

  26. How do you measure (check) a single cell in a parallel conection of 6 cells ?

  27. Us battery in tube ebike owners need an end to end battery pack solution.


  29. I want to solder the 0.2mm copper strips on top of the nickel strip what soldering iron will be best to do the job pls

  30. Зачетно.

  31. No Copyright Strike Video April 6, 2021 @ 12:19 am

    Can we use lifepo4 battery cell for ebike battery

  32. sigit pamungkas April 6, 2021 @ 12:21 am

    hello sir, if I’m going to make an external battery that will be installed parallel to the internal battery, should I equate the internal battery MaH with my external battery MaH.

  33. Radomil Sejnoha April 6, 2021 @ 12:22 am

    bla bla bla

  34. Absolutly stupid…
    diy spotwelder costs 50 bugs
    and so i can buy the liion accus original cheap in eu…
    and weld it by my own…

  35. diybatteries does NOT sell you the single cells in a specified by buyer quantity, found the website useless for the DIY’r like me that wants to buy 3 cells for a power supply project.

  36. Great video thanks for sharing your information,

  37. Ripoff

  38. Looking for a decent battery builder in nsw Australia, to pull my bnib Milwaukee 12.0ah batteries apart and make a 52v 20ah & add a BMS.
    Hit me up with your email & we’ll get together on zoom or something to arrange build, etc.

  39. Hello sair i am from India and i want to billed a e-bike for my college project work so thats y i want 36v 11 ah battry pack please kind le help me thanks sair

  40. Fuck all that! Vruzend, and No BMS!!!

  41. bigcatsliontiger April 6, 2021 @ 12:32 am

    Can i replace my battery 48v 10.4ah with another 48v 13ah/16ah ?
    My ebike is running about 25km ,i want to increase it to 35 km at least. Any idea if new different AH battery can harm controller or bike motor ?

  42. How to connect DMS can you make clear diagram pls

  43. Reuven Avraham April 6, 2021 @ 12:35 am

    Der frand i want to ask you about my ebick batry i hav 48v 15a batry after fool charge its work only 8 to 10 km and stops but there is curant soing 51 on skrin but it dont work you can tell me wats the problom so i can fix it thanks i am staying in isrial mi no is 0528455527 coll me and tell me wat to do

  44. 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 !

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

  46. Your web site comes up as malware warning alerts on my phone fyi so I wont go on the site just incase something you might want to check out could hurt your business if it’s not true

  47. Waste of time. If you don’t want to show everything then why did you upload the video.

  48. I went to and everything is sold out. I want those 10 minutes of my life back 😢

  49. Excellent video, am working on a powerwall with built in generator would like to discuss more

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