You already know a lot of battery charging system using a wireless phone. Intel recently demoed the phone charging system using a wireless laptop.
With the system being developed at this time, Intel claims able to provide up to 3 Watts to all mobile devices using wireless. Intel Wireless Charging is on display at the Computex 2012 in Taipei.
Wireless charging system seems to be very useful for users of mobile devices, because often times the problems found by the phone owner forgot to bring charger or USB Cable.