Spark

iPhone 4/4S Battery

MSRP: $39.99

The Spark seamlessly complements the iPhone’s design style and ease-of-use. Compact and lightweight, it is a significant improvement over the more traditional, bulkier back up batteries. Spark is about the size of a matchbox, small enough to easily fit on your key ring. Developed as a convenient emergency power source, the Spark is a real lifesaver when you really need to use your iPhone and it just went dead.

Coming the end of June, 2012