Texas Accessories Purple Combo KIT USB Wall + Car Charger + (2) Sync Cables for Apple iPhone 4S, 4, 3GS, 3, iPod, Itouch, Ipad Plug never heats or overcharges the battery.Intelligent IC chip inside recognizes a full battery and automatically switch to a saver. You must have a USB charging cable (INCLUDED) in order to charge your device with this charger. Input: 12V~24V DC.Output: 5V / 700mA Short circuit protection & LED charging indication.