... computer or the USB 5V interface output of the charger to charge the battery, charging,Overcharge protection: The battery voltage is 4 ... operation, the output is shorted, the circuit automatic protection and stop the output of the charger Main feature:for 3 seconds to ... Temperature: -20 °C ~ +50 ° CStandby time: 380 hours For the iPad / iPhone, mobile phones, MP3, MP4, GPS and other digital products