try here... Posted by: rb56 on Jan-03-13 10:58 PM (EST)
i use an iphone and there are numerous case/chargers and external charge packs that increase cell life. right now i have an external unit i charge on the usb of my pc and connect to my phone and it adds about 6-8 hours of use. i've also had charger cases that has a battery in the case that boosts usage to about twice the norm. http://www.batteries4less.com/contents/cellular-chargers/cellular-chargers.html