ebike battery help
Ebike has 4 batteries wired in series. Each battery is 12v20ah = 960 watts (48v20ah).
I charged it, and the charger isn't showing the battery is charged...i tried the battery anyways, and the lights/signals work, but no power to start it.
I used my DC Voltage tester and tested the charger - it has slighly more than 50 voltages - which is good
I tested each battery (all connected up in series - i didn't disconnect)
battery 1 = about 12.5 v
battery 2 = about 12.5 v
battery 3 = about 9 v
battery 4 = about 10.5 v
does this mean battery 3 and 4 are toast? and battery 1 and 2 are still fine?