Features: 100% Brand new and high quality! Automatically manage the working of solar panel and battery in solar system. Overloading !#!amp!*! short-circuit protect. Reverse diacharging !#!amp!*! reverse-polarity protection. Under-voltage and over-charging protection. Protection from lightning strike. Prolong the battery life cycle and keep the load work well. Easy to set up and operate. Suitable for small solar energy system. This controller can charge and discharge at the same time. It has 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. Specifications: Batt voltage: 12/24V Charge Current: 20A Discharge Current : 20A Max solar input: !#!lt!*!50V Equalization: 14.4V Float charge: 13.7V(defaul adjustable) Discharge stop: 10.7V(defaul adjustable) Discharge reconnect: 12.6V(defaul adjustable) USB output: 5V 3A Self consume: !#!lt!*!10mA Size: 150*78*35mm Package Includes: 1 * Solar Charge Controller