liftman666
New member
I have an electric trike that I built with a Bafang 48V 750W BBS02B BBS02 Mid Drive Motor powered by a 48volt 20ah battery pack with a 48V 30A BMS protection board.
The trike is an EZ TRIKE and I have been operating this E trike for over a year and then one day it just stops my screen on my DC18 goes blank. I checked the voltage being supplied to the system and I was only reading 3.1 volts.
I opened up the battery pack and took a voltage reading from positive to negative on the battery pack and was getting 53.1 volts. The voltage coming out of the BMS was only 3.176 volts. When I connected the charger to the battery pack, the BMS started to put out 53.3 volts. So, I put the battery pack back on the trike and went for a ride lo and behold after .2 miles my DC18 goes blank. So again, when I checked out the battery pack, I got the same results as before with 53.1 volts on the battery but only 3.178 volts on the BMS output.
The supplier of the battery pack sends me a new BMS even though the battery pack was out of the one-year warranty. So, I installed the new BMS on the battery pack and then I plug the charger in to bring it up to full charge. I installed the battery pack onto the trike and took it for a ride. At .6 miles the same thing happened again DC18 goes blank. Again, I open the battery pack and get the same readings as before with the old BMS.
My question is does anyone out there have any idea why my 750-Watt mid drive motor keeps damaging the BMS in my battery pack?
The trike is an EZ TRIKE and I have been operating this E trike for over a year and then one day it just stops my screen on my DC18 goes blank. I checked the voltage being supplied to the system and I was only reading 3.1 volts.
I opened up the battery pack and took a voltage reading from positive to negative on the battery pack and was getting 53.1 volts. The voltage coming out of the BMS was only 3.176 volts. When I connected the charger to the battery pack, the BMS started to put out 53.3 volts. So, I put the battery pack back on the trike and went for a ride lo and behold after .2 miles my DC18 goes blank. So again, when I checked out the battery pack, I got the same results as before with 53.1 volts on the battery but only 3.178 volts on the BMS output.
The supplier of the battery pack sends me a new BMS even though the battery pack was out of the one-year warranty. So, I installed the new BMS on the battery pack and then I plug the charger in to bring it up to full charge. I installed the battery pack onto the trike and took it for a ride. At .6 miles the same thing happened again DC18 goes blank. Again, I open the battery pack and get the same readings as before with the old BMS.
My question is does anyone out there have any idea why my 750-Watt mid drive motor keeps damaging the BMS in my battery pack?