ultimatenic
1 mW
Wondered if any of you have experienced this.
My bike developed this issue and I cant figure out if the battery has lost capacity or my motor controller or BMS is burned out or what.
I have a 48V 15ah ping battery. It's about 3-4 years old. Last winter temperatures got really low and battery wouldn't charge. After that cold snap the battery charged up but I've had this issue:
I charge battery. I disconnect and test bike, lifting the back tire and running the motor. Everything works. Wheel spins and full power levels.
But then if I hope on bike and if bike is on high power it cuts out the second I hit throttle. If I put the bike on lowest setting I can cruise down the block but on the way back it cuts out. Bike is unresponsive.
If I then take bike back to charger and just plug it in. It turns on. I can disconnect and run motor. Everything works. But when I jump on, again it doesn't last more than 30 seconds on the road.
Battery readings show 50-57 volts. And all battery series look like they are charged and holding charge (Though I had a funny reading that should one of the packs was 0 but then it was fully charged)
My theory is that battery cells are depleted enough that though they hold charge and power the bike. The second weight is added and the motor pulls higher volts the battery cuts out. Or my BMS is failing and cutting out when more volts are pulled...or my motor controller?
Thank you for any insight our ideas you may have.
My bike developed this issue and I cant figure out if the battery has lost capacity or my motor controller or BMS is burned out or what.
I have a 48V 15ah ping battery. It's about 3-4 years old. Last winter temperatures got really low and battery wouldn't charge. After that cold snap the battery charged up but I've had this issue:
I charge battery. I disconnect and test bike, lifting the back tire and running the motor. Everything works. Wheel spins and full power levels.
But then if I hope on bike and if bike is on high power it cuts out the second I hit throttle. If I put the bike on lowest setting I can cruise down the block but on the way back it cuts out. Bike is unresponsive.
If I then take bike back to charger and just plug it in. It turns on. I can disconnect and run motor. Everything works. But when I jump on, again it doesn't last more than 30 seconds on the road.
Battery readings show 50-57 volts. And all battery series look like they are charged and holding charge (Though I had a funny reading that should one of the packs was 0 but then it was fully charged)
My theory is that battery cells are depleted enough that though they hold charge and power the bike. The second weight is added and the motor pulls higher volts the battery cuts out. Or my BMS is failing and cutting out when more volts are pulled...or my motor controller?
Thank you for any insight our ideas you may have.