In our new world of rechargeable devices and constant connection, more battery power is never a bad thing. Seeing a battery indicator at 5% and a device begging to be recharged sends many people into a scramble looking for the nearest convenient charging solution. When there’s no outlet available or when you don’t want to leave your device tethered to a wall for the next hour, miniature USB chargers can be a lifesaver whether you’re on the road trying to summon assistance on your phone or just trying to buy some more time on your tablet at a crowded conference.