Finally got my board running and unfortunately wasted one of my LiPo batteries in the process. I’m using 2 Turnigy 5000mAh 5S 20C Packs connected in series to a VESC. When I started the ride, both packs were brand new at about 20V each with no more than a 0.02V difference between each cell. After a little test riding, the board finally shutdown at 30V (which looking back was probably way too low, especially for testing). Excited/nervous to charge Lipos for the first time, I saw that one of them caught a case of the puffs. The dud had dropped to 12V (2.4V/cell) while the good battery was still over 18V.
Is this just a case of a bad LiPo (from reading @onloop it does not seem to be uncommon) and not an issue with the VESC regen that I need to figure out? I had it set to the default, motor min -60A and batt min -20A.
Here’s how I connected the batteries just to make sure I didn’t have a brain fart on something so trivial
The puffy battery also did start off about 2mm thicker than the good one when it arrived brand new, so that is sort of why I jumped to the conclusion that it was the battery’s fault and not mine. Anyway, just though I’d ask now before I burn through some more crappy/cheap hobbyking batteries.