I recently got an Inboard M1 and I’m hoping to build better battery packs to replace the PowerShift battery packs it normally uses.
I’m pretty good at 3D modeling and printing, so the case shouldn’t be a problem. But while I’m decently knowledgeable about electronics and am good with a soldering iron, battery packs are a new area for me.
I opened up one of the PowerShift battery packs I got with the board and found the following
The cells they use are LG HE4 18650 2500mAh 20A.
The BMS is a PCM-L13S15-876(A). However that BMS is a 13s, and the PowerShift only has 12 cells. Also, one of the MOSFETs was missing from the BMS. I’ll attach an image to show which one was missing.
I’m still learning about battery packs, but it seems like making one with some Samsung 40T 21700 4000mAh 30A would be a pretty significant upgrade.
If anyone has knowledge or experience they are willing to share (Especially about how that BMS is set up), I’d LOVE to hear it.
And if anyone wants to partner up on this project, it would be great to share the workload and do this in bulk.