- Mar 4, 2023
To be honest I think it was your video that showed me how to charge mine so I can't argue you with you lolUsually salvaged cars sat on auctions for long enough where the LV battery needs replacement. You can test by checking voltage between the small pin that is closest to the center of the battery and the negative battery terminal. If that voltage is below 9V then you need to replace the battery.
LI batteries once below a certain level the BMS shuts off and the battery is just stagnant. 3 months it should totally be fine to get charged up like you showed in your video. If your LI battery that's supposed to last the lifetime of the car won't take a charge its prob because the BMS was messed up on disassembly. Unlike lead acids batteries leaving them in the car doesn't drain them down since the BMS shuts off. Once the BMS is off there is 0 draw on the battery
This is my theory I don't claim any of this as a fact