If you use your phone or tablet a lot, you know how important it is not to have to deal with a dead battery on the road. Especially when you don't have access to a power source to recharge your devices, an empty battery is very inconvenient. You can no longer find your way quickly, you can no longer listen to music, and you are no longer accessible. Luckily, there's this handy power bank from RollingSQUARE.