ANKER 622 MAGNETIC BATTERY (MAGGO)

Wireless charging is all the rage in the smartphone market, and Anker came up with a nifty portable solution you can use on the go. A strong magnet fixes the 0.5-inch-thin battery to your phone, so you can still use it while charging, and a built-in foldable kickstand allows you to watch videos comfortably, too. It can charge the latest smartphones at least once, decent enough for a battery so small and unobtrusive. $59.99.