oddlight

.. the Wireless charging stations are coming ..

There are three basic technologies for wireless charging: radio, resonance and induction.

Radio charging is well suited for charging low-power devices at long distances -- some 30 feet away. This technology is ideal for trickle-charging advance RFID chips affixed to, say, palettes loaded with products in a warehouse.

Resonance charging makes sense for robots, cars, vacuum cleaners and other applications that require massive power over minute distances -- essentially making contact with plastic, but not metal.

Toothbrushes now, and random gadgets will very soon, use inductive charging. This technology uses a coil to create an electromagnetic field across a charging station surface. The device then converts power from the field back into usable electricity, which is put to work charging the battery.

(Meanwhile, researchers at MIT said this week they have come up with a way to wirelessly supply power that could lead to the development of gadgets that don't require batteries at all.)

.. A world without chargers? More details here.