meetyg
Solar Addict
- Joined
- Jun 4, 2021
- Messages
- 1,099
This can be easily checked by measuring the voltage between the battery negative (before the BMS) and the positive terminal.
If you get anything lower than 10v (for a 4s pack), then yes, some or all cells have reached lower than 2.5v.
I think some BMSs (JBD/OVERKILL ?) have a hardware cutoff voltage which should power off the BMS when reached. That's why it's not possible to just charge them up, the BMS needs to awakened after slightly charging the battery.
If you get anything lower than 10v (for a 4s pack), then yes, some or all cells have reached lower than 2.5v.
I think some BMSs (JBD/OVERKILL ?) have a hardware cutoff voltage which should power off the BMS when reached. That's why it's not possible to just charge them up, the BMS needs to awakened after slightly charging the battery.