In a world where wires still dominate the landscape of power transfer, a new revolution is quietly unfolding: wireless power transmission . Imagine the convenience of charging your smartphone or electric toothbrush without ever needing to hunt for an outlet or untangle a mess of cords . The Wi-Charge system works like this: Plug the transmitters into regular power outlets or track lighting . They then find the devices nearby and send them the infrared energy . This electricity charges up the device's battery