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XT60 leads: https://amzn.to/3Peqg8N
Balance leads (make sure to buy the right S-rating): https://amzn.to/3PdFL0N
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00:00:00 - I'm going to build an 18650 battery (badly)
00:00:43 - Designing the pack: voltage, mAh, and C rating
00:01:16 - Voltage
00:03:15 - Capacity (mAh)
00:04:54 - 18650 vs. 21700
00:06:47 - C rating
00:08:58 - How many cells do I need?
00:09:15 - How to line up the cells for S and P rating
00:11:29 - S-group first or P-group first?
00:12:27 - Matching internal resistance
This is an inexpensive AC IR meter that is recommended by r/18650masterrace: https://amzn.to/4gwxl0G
00:15:37 - Superglue the cells together
The 18650 jig I'm using is: https://www.thingiverse.com/thing:1424904
00:19:35 - Nickel strips
00:21:00 - Use ceramic-tipped scissors and tweezers
00:21:38 - Fish paper
00:23:33 - Spot welder
00:26:41 - Spot weld the parallel groups
00:28:36 - Map out the series wiring
00:30:10 - Spot weld the series groups
00:32:01 - Check your work
00:33:07 - Solder the XT60 lead to the battery
00:36:58 - Plan and solder the balance lead
00:40:54 - Final assembly
00:43:17 - Conclusion