Upgraded offroad hunting ebike need help with controllers
I just bought a new lithium ion 72v 17.5 with 50a BMS cells 3C panasonic 18650 3.7v 2900mah in 20s6p battery
this battery runs in the triangle
I run as a secondary backup battery 3 mos old 72V 20AH 26650 cells 2C 3.7v 5000mah 20S4P...