Solar Battery Charging Panel 50W Monocrystalline DC 18V Portable Solar 1600mA Power Panel Kit with Controller Item Type: Solar Battery Charger Material: Monocrystalline Silicon Solar Panel Color: As Picture Shown Application: For Household, Car, Boat, Etc Product Size: Controller: Approx.13.5x7cm/5.3x2.8in Solar Panel: Approx.42x28cm/16.5x11.0in (Without Power Storage Function) Weight: Approx.790g/27.9oz Standby Current: <10mA USB Output: 5V/2A Maximum Operating Temperature: -35℃ - +60℃ USB Output: 5V Solar Panel Voltage: DC18V Solar Panel Power: 50W Maximum Current: 1600mA Controller Current: 10A (The Controller Is 12V/24V Automatic Adaptation) Controller: Float Charging Voltage 13.7V (Default Value, Adjustable Range 13-15V) Discharge Cut Off Voltage 10.7V (Default Value, Adjustable Range 9-11.5V) Discharge Recovery Voltage 12.6V (Default Value, Adjustable Range 11.5-13V) The marked voltage corresponds only to the 12V system. If a 24V system is used, the above parameters will be doubled