BG10 Replacement of controllers A and B

If you encounter 02 problems, please report to us as soon as possible and provide your order number
Used to solve the 02 error problem. The video is long and requires patience to watch repeatedly.
If you encounter something you don't understand, please give me feedback.
Chat E-mail:[e-mail]

[@oldmanebikes8392]

Nice job. I wish all Ebike companies cared enough to do videos like this and share them with everyone. Great customer service

[@BIGNIUE-BIKEOFFICIAL]

Thankyou!