BPowerGen 4.2Amps 20W Dual USB Car charger Designed for Apple and Android Devices ReviewbP PP PowerGen 4.2Amps 20W Dual USB Car charger Designed for Apple and Android Devices PPowerGen Dual Port 20W 4.2A (upgraded from 15W 3.1A) USB Car Charger charges your iPad, iPhone, iPod, HTC, Blackberry, MP3 Players, Digital Cameras, PDAs, Mobile Phones.PUse your existing USB charging cables to charge most USB powered devices Easy-to-see LED confirms whether USB charger is properly connectedPDual Port Design, one Apple Devices and one port for Non-Apple Mobile phones or other devices.PInput:12-24V 1000mA; Output:DC 5V 4.2A or 20W (Shared by two ports)PSophisticated circuit design with over-heated, over-current, over-charging protection. Charging will be automatically stop when battery is full.