Part 2: The “JB” in “JB Weld” Stands For "Joining Batteries"
Step 1: Acquire unreasonable amount of P42A
Step 2: Acquire unreasonable amount of JB Weld (not sponsored (but it should be))
Can’t have enough fishpaper
Or P-groups. Or welds.
All the series connections are done with 10AWG flat braid, but I wanted to keep the connections at each end of the pack the same height as the rest, since this chassis is gonna be a little tight. So I tinned some 10AWG silicone wire, and cinched the braid around it with a thin wire twist…
…then dumped in more solder and trimmed with a flush cutter…
…and result can pack very flat.
And there’s the finished 18s9p pack! Forgot to take intermediate pictures. The series connections are 4x 10AWG, using both the top and bottom of the pack to spread out the current and avoid hot spots. The plates are 0.2x65mm nickel, and the p-groups are stacked with 3mm EVA foam between them to keep the packs flexible enough not to be stressed by the chassis flexing around in operation.
