Mipow Portable Custom Clone Power Case With Built In 1500mAh Backup Battery, For iPhone 4/4G - Never Run Out Of Power!

Introducing Our Clone Power Case, it allows you to DOUBLE your iPhone battery when you're on the go, and it makes the iPhone battery REPLACEABLE at the same time. You can simply replace the battery of Clone Power Case with our included battery (or any BP-4L standard cell phone battery) by simply taking off the back and taking out the battery, then replace with a new one. The Clone power case is "Made for iPhone" certified by Apple Inc. and it's designed to perfectly fit your iPhone 4. It provides NOT ONLY extra powers to your battery hungry iPhone 4, BUT ALSO a custom fitted full protection for your expensive iPhone 4, yet without changing the original design of the iPhone 4. Its transparent plastic framing keeps the metallic look of iPhone 4, and at the same time, can protect the antenna from human touch.