Solar Power 20W & 40W StorageBattery 12V/18Ah & 12V/36Ah free maintenance lead-acid battery Charging Time AC output(adapted):110/220V, DC output:5/9/11/16V. Feature: To provide you with 20/40 W portable power supplier. They could support TV,lighting,radio,recorder,fan and small home-use electric equipments. To use for small home use,camping,outdoors activities and travelling