... 4.Temp. compensate 12V/24V Single output pwm Solar charge controller SR-L1.PWM2.Digital LED display3.Various protection4.Temp ... ,10A ,15A ,20A ,30A ,40A(optional)Rated discharging current5A,10A ,15A ,20A ,30A ,40A(optional)Working Voltage12V ; 24V ; ... -4.0mV/°C/2V(boost voltage, direct charge, float charge and charge return voltage compensation)Control methodPWM Smart ChargingWorking temperatureFrom ...