How to Build a DIY 10s4p 21700 Electric Skateboard Battery (Tutorial)

In this video, I demonstrate how to safely build a 10s4p battery using Molicell P42A cells and pre-cut nickel strips from Duck Battery Systems. Final battery montage at the very end of the video!

Building batteries is/can be dangerous. Please take proper precautions when building batteries. Li-ion cells of any time can turn into large fireballs when overheated, punctured, or shorted for extended periods of time. Know what you're messing with - but don't be too scared.

As mentioned above, I used precut 10s4p 21700 size nickel strips from DBS:
https://www.duckbatterysystems.com/co...

These tabs are perfect for easy building, as they do not require any cutting or special preparation. The 0.2mm thickness provides a ton of current-carrying capabilities for most packs and is relatively easy to weld. In this video, I used my KWeld on 54J for the welds and they stuck perfectly. Unlike the last pack, these cells are brand new and were purchased as part of a group buy some time ago. The Molicell P42A is a great cell and has become a staple in the electric skateboard scene, finally, manufacturers are starting to catch up. If you are curious how much this pack cost, I am selling it to a client for $400 since I got the cells at a good price - it would be more if you were to purchase the cells right now.

Discounts:
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Timestamps:
0:00 What's Different?
0:49​ Battery Building Steps
1:47 Gluing Cells
2:23​​ Fishpaper Time!
3:37 Spot Welding Tips
4:14​ Spot Welding Montage
4:55 Positive / Negative Leads
7:18 Taping P Groups
8:31​ Series Connections
15:21 BMS Wiring
16:14 BMS Diagram
18:04 Balance Wires
19:34​ Heatshrink Application
20:29 Outro
22:01 B-Roll Montage!

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Media used in this video:
Track: Dominic Strike - Heartbeat
Music Provided by Magic Records
Listen To The Original:    • Dominic Strike - Heartbeat (Magic Fre...  ​​​​
Free Download: https://fanlink.to/o9ha​​​​
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Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download: http://bit.ly/-faithful-mission​​​​
Music promoted by Audio Library    • Faithful Mission – Artificial.Music (...  ​​​​
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