The Mophie Juice Pack is a case that both protects your iPhone and also more than doubles the battery live of your phone. You can still use your camera. It does change the external port on your iPhone to be a standard USB port.
• Rechargeable 2100mAh lithium ion polymer battery and protective case in one.
• Talk Time Up to additional 10 hours on 3G, internet Use Up to additional 10 hours on 3G, up to additional 10 hours on LTE, up to additional 12 hours on Wi-Fi, audio Playback Up to 50 hours and Video Playback Up to 12 hours
Buy Mophie Juice Pack Plus Case for iPhone 5s/5 - Red http://bit.ly/juicepack