Link: http://mobilitydigest.com/mobility-digest-review-htc-external-battery-bank-bb-g400/
Quote: "I think we all know who HTC is, they make some of the best phones out there I think. Many of my phones have been HTC brand and I’ve been happy with the all, but they make do make more than phones. Today for review I have the HTC BB G400 or the External Battery Back, which is what it sounds like, an external battery to provide extra power to your devices like phones and tablets. The HTC battery pack is very small and portable but it contains a 3000mAh rechargeable battery that should be more than enough to charge your phone a couple times. The battery pack has a standard USB port on it for output power which means you can pretty much charge anything powered by USB with it. So read on to learn more… "