Even if they explode on you

Is there anything worse than battery anxiety? We’ve all become dependent on amazing mobile technologies like smartphones to make our lives easier and more enjoyable. While these devices have become incredibly energy efficient, we’re still a long way from having to charge them only once every few days.

Modern smartphones barely manage 24 hours of charge with moderate use, so we’ve gotten used to moving our devices from one charger to another. We charge at home, in our car, and at work. Just to keep that dreaded “low battery” warning at bay.

That’s why the ubiquitous “power bank” has become so popular in recent years. These compact bricks of varying sizes can store enough energy to keep your phone charged for days. Power banks have probably saved the day more times than anyone knows, but most people use them without really knowing anything about them.