Are you sick of running out of battery while you’re tweeting or instagramming your social life? Stop fussing as we have the solution! Portable Power Bank by i-Glitters is capable of storing up to 20， 000 mAh power – that is efficiently enough for a couple of days for heavy phone users. FunctionsThe i-Glitters Portable Power Bank is capable of storing up to 20， 000 mAh power supply – that’s enough to fully charge your iPhone 4S 6 to 8 times! Apart from charging your gadgets conveniently， the i-Glitters Portable Power Bank has a protecting function with built-in short circuit and over discharge protection to prevent long term damages on your gadgets. Its dual USB jacks are compatible for almost all brands and gadgets too!  CompatibalityThis i-Glitters Power Bank is compatible with all sorts of brands and gadgets! Apple products， Blackberry， Dopod， HTC， Samsung， LG， Motorola， Nokia， Sony Ericsson - you name it! It even works with gaming consoles (PSP， NDSI， NDSL， etc.) and a wide range of MP3， MP4 and MP5 players! That’s not all; you can even charge your digital cameras， as well as DVD， CD and DV players with the i-Glitters Power Bank. Is it a “must-have” item? Of course yes!