5 Best Portable Chargers for your Smartphones
5. Genius Universal Power Pack ECO-U600
The Genius Universal Power Pack ECO-U600 offers two USB ports for charging two different devices simultaneously. The charger is compatible with a wide range of smartphone and tablets. The charger comes with a heavy 6800 mAh Lithium-ion battery and is compatible with Nokia, Samsung, Sony Ericsson, BlackBerry, Apple and HTC smartphones and tablets as well. It is a bit pricy costing 
4750.
