Tekkeon myPower Rechargeable Battery Case for iPhone 4, Red
myPower for iPhone 4, the ultra slim rechargeable battery case for iPhone 4, lets you talk, rock, view, share, and stay connected longer. This compact battery case doubles as a dock for automatic syncing, and as a case to protect your iPhone 4 from everyday wear and tear. Equipped with a replaceable efficient lithium polymer battery pack, myPower for iPhone 4 preserves your iPhone 4 battery by bypassing the battery and directly powering (rather than charging) your iPhone 4. When plugged into a USB power adapter or computer USB port, myPower for iPhone 4 will charge itself and the connected iPhone 4 battery. A bright dual-color LED shows the capacity level at a quick glance.With its highly innovative eSwap technology (patent pending), myPower for iPhone 4 lets you exchange the battery module on the go.