Wireless charging is referred to several different methods of charging batteries or electrical devices without the use of cables or AC adapters. Wireless charging is used for many different things, but it mostly common used as a rechargers for cellphones and smartphones like the iPhone, game consoles like Nintendo DSi, MP3 players like the iPod and other similer devices.

Currently it is only possible to transfer low current wirelessly but in the future, the technology could be used to power homes, factories and larger objects such as cars. It will propably have a military use to provide power to the forces fighting in the battle field. There are 3 methods of wireless charging: RESONANCE CHARGING, RADIO CHARGING and INDUCTIVE CHARGING.

Inductive charging is used in the Powermat and Wildcharge technology. In inductive charging, an adapter equipped with contact points is attached to the device’s back plate. When the device requires a charge, it is placed on a conductive charging pad, which is plugged into a socket. The idea of wireless power transmission is not new. In 1899, Nikola Tesla wirelessly transmitted 100 million volts of electricity 26 miles to light 200 bulbs and run an electric motor. However, at that time direct current (DC, which is the wired method) and alternating current (AC) were competing technologies. DC, backed strenuously by Thomas Edison, emerged the winner.