I understand how an electrical circuit works, sort of, but I can't grasp how a battery can be charged without a physical connection to the charging source. I've seen stuff about Tesla's idea of transmitting electricity via giant versions of one of his coils and devices being able to take in that energy and function but I don't understand how it is supposed to work. It seems if it does that is a way vehicles could get their energy, but the trick there being how to meter it and have the customer pay for his/her share of the usage.
October 18, 2007 The idea of wireless charging is an attractive one - do away with messy cords and chargers in favor of a wire free charging pad that does the job for multiple devices by simply placing it on the pad's surface. The concept has been around for several years, but commercialization has been slow. Now WildCharge is offering a wireless charging system for Motorola RAZR phones with an adapter for iPod Nano just around the corner.
One charging pad could power up all gadgets
10:09 21 January 2005 by Barry Fox
Finding the right battery charger for your cellphone, digital camera, camcorder or PDA among the sea of anonymous black boxes that clutter our homes is a complete pain - as is finding a free socket when they all need charging at the same time. But this modern hassle could be short-lived.
Instead of each device needing its own charger, it may soon be possible to recharge phones and cameras by placing them on a plastic pad the size of a mouse mat. A dense array of coils buried in the pad will transmit energy to the gadget to charge its batteries. And it will be possible to charge as many gadgets as can fit on the pad at once, the inventors say.