ROMOSS Mobile Juice Pack 5200mAh high capacity quick charge Power Battery for iPhone,iPod,iPad,HTC Thunderbolt,HTC Inspire 4G,HTC DROID Incredible 2,HTC EVO 3D,BlackBerry Curve 8520i,BlackBerry Curve 8330,BlackBerry Curve 8350i,Samsung Galaxy S II (US Cellular) R760,Samsung Galaxy S II (AT&T) i777, HTC Trophy, HTC HD7, HTC Surround and more,and fast shippng from US, can receive within one week Light and Small : Dimensions: L89.5*W48.5*H21mm,Weight: ~117g, so it is very convenience to take it out. High Capacity:5200mAh Lithium ion battery.Input Charging Time :~7 hrs (charger sofun 2 via PC-USB) Life Cycle &gt; 500 Times,input: DC 5V / 1.5A Max, output: DC 5V / 1A Max Battery Life Extension on Apple products: 250~300% of 4G 4S 3G 3Gs iPhone Battery life,30 hours iPhone Talk time,80 hours iPhone audio time