Recent content by oaktowntandem

I bought some a2b torque plates from edamame. Good fit. Much better than the Ultramotor part. I recommend them.

Put something is series with your lab supply such that you can slowly get the battery voltage past about 32 volts. At that voltage the battery may be more stable and the bms may recognize the stock charger through it's regular charge terminals. What color are the cells? If red, they are likely...

I don't have experience with this battery. However, I think Ken is right. Open the battery up and charge the battery terminals directly so as to bring the battery voltage up above about 32 volts or higher. Then see if the bms will allow the battery will charge with the charger through the...

Your bms may still be ok. I tried to explain this and how to test it above. What you are doing is bypassing the bms when charging. As you have discovered, this works, but you should be aware that when bypassing the bms there is no longer a mechanism to balance the cells. Bulk charging lipo...

Ok, you do have the stock charger. For safety reasons these A2B bms's are made to deny the ability to charge the battery from the charge port if the battery voltage drops below 30 volts. That is what may have happened in your case when the charger's green light went on. Now that you have...

I have found that they do occasionally go bad. However, they are made to use the Ultramotor charger. The bms will not allow the battery to charge if you simply apply 42 volts across the charge wires.

Last week my brand new 1010b+ died after its first minute of charging at only 1 amp.