DIY 72v 20AH Battery Build

This was quite the project for me. I built a 72V 20AH battery from used batteries that I had to disassemble and balance myself then rebuild to make a large 72v battery protected with a BMS for a 5000w E-bike build I'm working on. I had a lot of hiccups along the way: My spot welder died, packages got lost in the mail, I got a bunch of parts from Ebay and Ali-express that were not as described. I also learned that nickel plated steel is often used when you have 2p,3p and 4p rolls, even if the seller lists it as something else. Thanks for watching!

Relevant links:
20s lithium battery charger (72v nominal 84v max): https://amzn.to/4apvrf2
Cycle Satiator I purchased (for 85% and variable charging): https://amzn.to/3vXlqH2
Jumper cables for cheap(er) 8awg cable at time of filming: https://amzn.to/3VNHbUh
Ebike kit: https://amzn.to/3vvs1bK
BMS 72v: https://amzn.to/4cOwLKk
Molecel INR 18650A cell used: https://www.batteryjunction.com/catal...

Dave's YouTube Gear:
GoPro Hero 11 - https://amzn.to/44tlnyL
Zoom F2 field recorder - https://amzn.to/44AoHIc
Desktop mic: https://amzn.to/3OGa5k7

Time Stamps:
0:00 - intro
1:54 - Size and configuration
2:47 - spot welding
3:55 - BMS
7:37 - Terminals +
9:30 - Shrink Wrap and sealing

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