iPhone Battery

Looking to give your iPhone 4 battery a boost? The juice pack plus from Mophie sports a massively powerful 2,000 mAh capacity battery in a sleek case. Besides fitting the iPhone 4 so well, this additional battery adds up to 8 hours 3G talk time, 7 hours 3G data time, and 11 hours video playback depending on usage conditions.

The case features an ergonomic design and rubberized bumper that will come in four colors (black is currently available and ships in 1-2 days). Your iPhone 4 can be charged and synced without removing the juice pack plus, and a built-in LED status indicator tells you how much charge is left.

Some unlucky iPhone users got the short end of the battery life after updating to iOS 4.1. Users have reported battery life issues among other problems with prior firmware updates (remember iPhone OS 3.1?) but now some running iOS 4.1 are seeing their battery percentage drop to zero within hours.

Online discussion forums are hopping with activity from iPhone 4 and iPhone 3GS users complaining of shortened battery life and warm phones running iOS 4.1. Some reports have suggested that errant processes are running in the background constantly and draining the battery power. Bugs in the modem firmware, tethering software, and Game Center have all been cited as possible causes of the issue.