New Trent NT120T USB chargeable 12000mAh Heavy Duty 2A/1A Dual USB Ports External Battery Pack for the Latest Apple iPhone 5, the new iPad, iPad2, iPhone 5/4S/4/3Gs/3G, iPod Touch all versions; Samsung Galaxy Note/Nexus/S3/S2/S; HTC Titan, Sensation, ONE S/V/X, EVO Thunderbolt, Desire; LG Optimus series; Blackberry Bold, Curve, Torch; Motorola Razr HD/MAXX & Bionic, Atrix/2; Nokia Lumia 700/800/90
I purchased this as a backup power supply for my iPhone3GS.  Navigation apps use lots of power and I need the phone to operate for a whole day where there is no power outlet available.  This power pack is the perfect solution.  It is small and light weight.  It fits easily in a pocket so it can be used to re-charge the phone on-the-go.    The power pack arrived partly charged.  I used it to charge the phone until it ran down completely, then I followed the instructions and let it charge fully until the pilo