Wireless Charging: The Powermat works via magnetic induction, when you put a device on the mat, magnets pull it into the right position. A light on the mat turns on and a chime sounds, indicating the connection. You have to plug your phone into something, whether it’s a fob or a specialized case. The fob even has a little wire going from the base of it to the plug, so the Powermat’s sales pitch runs into a semantic wall there.
Stops When Charged: Once a mobile device is fully charged, the Powermat stops charging it automatically, unlike your usual wires and the mobile phone dings when disconnected from a charger.
Price: The standard Powermat for $99 comes with the mat itself, an adapter fob and eight adapter tips to fit different phone charger ports. The special cases for iPhone sets ($40), various BlackBerry handsets ($30) and other devices are sold separately.