iSunnao 360 Degree 5A 12V/24V, Gold EC3 Dual Car Charger features 5Amps 25W Dual Rapid USB Port Car Charger with LED Display for Apple and Android Devices. Over-Charge and Over-Current Protection - iSunnao USB Car Charger features auto power off when the input and output current is greater than safety curent. It protects the charging devices from Over-Charge and over- Current. 4 In 1 USB Car Charging Adapter - This Car Charger features LED display to show the voltage of the car battery, Internal temperature, and the current of the device you are charging. SPECIFICATIONS- Input: DC 12VS- 24V, Output: DC 5V/5A, Conversion efficiency 95%, Measuring range: Voltage 5V-25V, Current 0 - 3.1A, Temperature -4 to 176 F iSunnao Dual USB Car charger is backed with a One Year Warranty.