IP68 Waterproof Solar Charge Controller 1,Stree light solar controller 2,1 year warranty 3,PWM Control KM-5A, 10A, 15A,20A,30A light ... the work of the three storage periods, while the controller automatically enters the first work period to work.When the first ... battery inherent characteristics4 Science of battery management,5 with a power-down save function parameters, namely the system model and ...