I'm trying to turn a scavenged scooter battery into an e-bike one.
I can balance charge it via the original BMS but discharging is the issue: P+ and P- are only delivering about 4 V.
More wires, with various voltages ranging from 0 to 14 V, are also coming out of the BMS and merging into this wheel connector:
All I need is 36 V (both the battery and the motor nominal voltage) to feed into the e-bike controller.
I guess my options are:
- bypassing the BMS discharge by soldering new wires onto the battery poles: is this safe?
- cutting and merging some of the connector's wires to somewhat add up voltages: this sounds rather hazardous ⚡
- any other insight greatly appreciated 👍