Deal: Lumsing Portable external battery 5200mAh External Battery Pack In these days,Portable external battery are more and more popular than the extended batteries which is maybe because of the fact that most OEMs are making non-removable batteries these days.Of course,we have seen many high capacity battery packs,but I never seen a external battery packs has 5200mah Capacity and it is only 2.9 x 0.8 x 2 inches (4.6 ounces) .Yeah,it is smaller and lighter than other 5200mah external battery packs,just to give an imagination that how small that is.It can 2-3 full charges on most smartphones or add 22 hours talk time to your iPhone 4S / 4G / 3GS. The Lumsing® 5200mah Mini Size Portable external battery has 500 + recharge cycles over the life of the battery,so you can see it can last you a very long time.It’s got a stylish quality design with multiple protection system inside for safety. It's designed for avoiding overcharge, overvoltage, overcurrent, and short circuit.The biggest lightspot is it has a Built-in Charging Cable,so it can charge and becharged at anywhere and anytime without an extra wire.This is definitely a magic battery,and if you are on a travel or going hiking or camping,it is a perfect item to pick up,so that it will probably last your phone power a few days. The Lumsing® 5200mah Mini Size Portable external battery, the link is below: http://www.amazon.com/dp/B00HQ6RU2W