If the controller cuts power (low voltage protection) when your battery meter still shows a green light, do this:
Buying a variable resistor from 0 to 500 Ohm (3 legs)
Discharge the battery until the controller cuts power
Place the resistance between the (+) terminal of the battery and the green wire from the power meter (one leg of the resistor delivers the power completely, do not use)
Increase the strength of the green and orange go off every two
It's fast and efficient
Greg