As the title says, the battery pack I made used to charge to 33.6 +/-. 05 per cell via a onboard BMS. Then I charged it it went up to 33.0 when I turned it on but didn’t think too much of it, I had left it for a day before riding it again. I noticed it was lower than I expected and when I charged it last weekend which it charged up to 32.8 which caught my attention and not today I charged it again, it only made it to 32 this time. I’ve never taken the pack lower than 27.5 volts if thats useful information.
I’m not certain where to start looking as to what’s going on, is this a BMS or cell issue? The BMS I have is from battery support 8S lipo, 80amp continuous, 20 amp charging. I’m at a student house so I don’t have a multimeter or my tools to look into what’s going on so I’m looking for a place to start once I go home for a weekend.