I love having an extended battery case for my phone. I do not know hoe people survive with out one. If you have been looking for one, then check out this deal on Groupon. You can get this Mota iPhone 4/4S Extended-Battery Case for $29 and it includes free shipping.
- Durable, protective case with built-in battery
- Nearly doubles battery life of iPhone 4 and 4S
- Slim design for sneaking unnoticed through air ducts
- Extends standby by up to 300 additional hours
- Extends talk time by up to 7 additional hours
- Extends Internet-browsing time by up to 6 additional hours
- Extends video-playing time by up to 10 additional hours
- Extends music-playing time by up to 40 additional hours
This is available in five different color combinations.