The Juice Pack ultra-thin rechargeable external battery concealed inside of a protective form-fitting case for the Galaxy S4. It offers the full protection of a hard shell case while providing virtually double the charge. mophie's lightest and slimmest solution to date.
Talk Time Up to additional 13 hours on 3G
Internet Use Up to additional 5 hours on 3G
Up to additional 5 hours on LTE
Up to additional 6 hours on WiFi
Audio Playback Up to 35 hours
Video Playback Up to 7 hours