Among the sea of USB battery packs at CES, we’re seeing an emerging trend: the ability to track remaining charge, granularly. Instead of relying on a four or five bars, they actually show the percentage in one of a few different ways. Powerocks is one of the companies jumping on this, with Smart Power 5200mAh ($80).


With 2.1-Amp output, the battery can charge most iPads and all iPhones at full-speed. The most distinctive feature is the accompanying app, which will show exactly how much charge is remaining in the battery pack, on the screen of your phone.

Nick Guy

Nick Guy was an Accessories Editor at iLounge. He had reviewed thousands of iPhone, iPod and iPad accessories; provided visitors comprehensive evaluations of products on the industry-leading independent authority.