GTMax Green 2-Port USB Car Charger Adapter 2A for Cell Phone, Smartphone, iPhone Brand new GTMax 2 Port USB Car charger. Fast charging for multiple devices, including iPad, iPhone/iPod,MP3 and smartphone Input: 12v DC. Output: 5.0V / 2000mA 2 USB Port. Short circuit protection. LED charging indication. Plug never heats or overcharges the battery. Intelligent IC chip inside recognizes a full battery and automatically switch to a saver.