I have a Daly 150A/20S BMS on my EV converted Vespa "VespaLectric".
The last time I tried to ride it, I switched on the main switch, tried to go, and lost all power.
Long story short, looking at the bluetooth app, it appears that the charge and discharge FETs are both shutting off like there is some sort of fault. I can get them to switch back on by opening and closing the main circuit breaker. After getting them back on, they turn off again within a second or two of trying to switch on the scooter, or when connecting the charger.
The pack is currently at 82.6V, which is about 85% SOC, and is well within the balance parameters. Is there anyway to read a fault history from these BMSs to figure out what the problem might be?
The last time I tried to ride it, I switched on the main switch, tried to go, and lost all power.
Long story short, looking at the bluetooth app, it appears that the charge and discharge FETs are both shutting off like there is some sort of fault. I can get them to switch back on by opening and closing the main circuit breaker. After getting them back on, they turn off again within a second or two of trying to switch on the scooter, or when connecting the charger.
The pack is currently at 82.6V, which is about 85% SOC, and is well within the balance parameters. Is there anyway to read a fault history from these BMSs to figure out what the problem might be?