Is safe battery replacement for iPhone 5? My iPhone 5's (bought on January 2013) battery life is now something about 5-6 hours. I found some possibilities how to buy new battery and replace it. Does anybody have some experiences with this replacement? Does it work and solve the battery life problem?

iPhone 5 new battery
Before paying an independent dealer to replace your battery, first check if Apple will do it for free

Enter your serial number on this page - Apple: iPhone 5 Battery Replacement Program