As perhaps the greatest discovery of the nineteenth century, electricity has transformed humankind's existence. From the lightbulb to the smartphone, our modern lives are defined by and dependent upon our ability to reliably harness the flow of charge for our own purposes. Our devices are only useful as long as they are powered, and this is especially true of today's powerful and power-hungry smartphones. Wireless charging is the most recent step in the evolution of their convenience, and so we've compiled a list of some of the best and most cutting-edge wireless chargers so that you can ensure your smartphone is always powered up whenever you need it.