Emily VelascoStep one of rebuilding the e-bike my co-worker gave me is grafting a different battery management board onto the battery pack.
I still need to figure out how to wire up the charger plug. They used an XLR connector with four pins, and the charger doesn't turn the power on until it senses something (maybe a temperature sensor?)
Edit: i just needed to check the back of the charger for the pinout
Stormgren@MLE_online I dimly recall that on the 3-pin XLR connector chargers, pin three has to be pulled to ground on one side or another as a sort of lock to keep the wheelchair or scooter moving while charging. Never seen a 4-pin, but wouldn't be surprised if one of those pins had the same function and the other was a temperature sensor.
@Stormgren On further examination, the four-pin plug is only connected to three wires, and one of them was definitely going to a temperature sensor
@MLE_online Okay, sounds like the electric zero turn motor than I re-used the charger when I did a VRLA to LiFePO4 conversion a couple years ago. Three pin "golf cart" connector that one of the pins is a thermistor that had to be present for the battery to charge properly, so I reinstalled it and bolted it to the frame, so it's just kinda hanging out there not doing much and I let the BMS handle temp monitoring on the cells themselves.