I added 3x Xiaomi 10400 powerbanks in a serial connection to my e-bike original battery (10s, 10Ah). Now I need USB power supply which has at least 3X2A output, but not in parallel as that would create a short. Of course I only use usb input to charge the powerbanks, output + and - wire (max 20A current) is soldered directly to cells, which are protected via adjustable low voltage alarm set at 3V.
Any suggestions for such a usb power supply?
Thanks!
