Apple iPhone 4 / 4S Extended Battery CaseProduct Review (submitted on August 25, 2012):
This battery case exceeded my expectations! Lasts a long time and doesn't add too much extra bulk to the phone. I also own a Mophie case and with its $80 price come a little more slimness but that's all. The case also gives good extra protection for the phone. It's a great accessory for our iPhones.