AC/DC DUO CHARGER/DISCHARGER Hybrid Touch DUO AC/DC Charger is ground breaking charger features max 400 watts of power via dual 200 + 200watt circuits allowing for simultaneous charging of two batteries up to each 20amps. (when you use with DC power supply)     HIGH SENSITIVITY ELECTRONIC 4.3inch FULL TOUCH COLOR SCREEN New designed touch screen with full color. It can be accessed instantly each menus with intuitive function.Efficient battery management function helps manage the battery in the best condition even during the race, as well as general driving.   DC 12V OUTPUT / USB CHARGE PORTEUROPEAN STYLE OUTPUT This product has a built-in power supply.You can supply power to LED stand, Tire warmer and etc. And USB charge port is built-in, you can charging to smart phone and etc.  IC TEMPERATURE COOLING FAN IC controlled cooling fans protect from high temperature of device.    BATTERY MONITOR Battery monitor is to check the resistance and cell deviation of each battery.    BUILT-IN AC/DC INPUT PORT Hybrid Touch DUO charger attached built-in DC power supply.You can use input AC110~240V or DC 10~30V.