ITEM NAME:12V/24V Solar Panel Battery Regulator Charge Controller 20A PWM LCD Display %a Features: 12V/24V auto adapt,LCD display,USB Charge Automatically manages the working of solar panels and batteries in your solar system. Overloading & short-circuit protection. Reverse discharging & reverse-polarity protection. Under-voltage and over-charging protection. Protection from lightning strikes. Prolong the battery life cycle, and keep the load working well. This controller can charge and discharge at the same time. It has a perfect SOC function,control charge current, and supply power to the loads. The controller will automatically compensate the temperature of the charging voltage according to the changes of ambient temperature. Specification: Battery Voltage: 12V/24V auto adapt Current:20A Max Solar input: