There is nothing worse than running down the battery on your phone halfway through your day. It is especially annoying if you’re traveling and need your phone for things like navigation and not just photographing your lunch. Whether you’re exploring a new city or simply trying to survive a torturously long flight, this tiny portable USB charger gives your dying electronics a second chance at life. Simply charge it before you leave home, and then keep it on hand for emergencies. It’s the size of a tube of lipstick, but has enough batter power to fully recharge a smartphone, kindle, tablet, or a digital camera. The Anker can even determine what kind of device it’s charging to optimize charging time.