There’s a lot of backup batteries on the market, but Just|Mobile has one of the few that are Apple-certified for iPhone/iPod. The Gum Plus is compact (3.1 x 2.3 x 0.9 in) and has a rounded aluminum case. Outside are LED lights that act as a battery meter. Inside is a 4400 mAh battery (1A current) that can charge an iPhone to 90% in one hour, and it can recharge the iPhone up to four times before it needs a charge itself. The Gum Plus comes with a mini USB cable for charging and an Apple docking cable to charge your Apple device. It can charge other USB devices; simply supply your own cable. The Gum Plus is $69.95 from the Just|Mobile website.
Support The Gadgeteer: The Gadgeteer’s main sources of revenue are advertising and affiliate links in articles like this one. Even though we may receive compensation, we always give our honest opinions about our experiences with each product.