1.Car Battery charger 2.Input:DC12V; 3.Output: over DC12V 3A 4 ... factory, such as: 24V, 19V 12V 9V 5V etc. )*Can charger many electronics products: notebook, walkie talkie, batteries, PDA, torches, ... and stock conditionTemperature: -10°C-50°C Humidity: ≤85%13. Protection functions:Against over charge: Yes;Against over discharge : Yes ... inquiry.Hope to cooperate with you. 12V Car Battery charger