WindyNation P30L LCD 30A PWM Solar Panel Regulator Charge Controller with Digital Display and User Adjustable Settings WindyNation P30L PWM 30 Amp solar charge controller prevents battery from being overcharged and damaged by the solar panel. Ideal for 12 and 24 volt batteries. Controller can be configured for AGM, lead acid, gel and other battery types. Advanced electronic protection: overload, short circuit, and reverse polarity protected LCD digital display provides system information (amperage, voltage, temperature, load control etc.) Battery temperature sensor (BTS) is included. See photo gallery. System settings are user adjustable by using the MODE and UP and DOWN buttons