Wireless Charging for your Cell Phone

When you place a cell phone or another electronic gadget on a Powermat mat, the mat identifies the device and transfers energy to it. Once your phone is is fully charged, the charging stops automatically.

Last year, Powermat USA showed off a mat that charged gadgets that were placed on top of it — as long as the gadgets were equipped with special covers.

This year, Powermat took that a step further by unveiling the Powerpack, a battery that replaces the one that comes with your cell phone and lets you charge your handset by placing it on the mat — no other attachments needed. Powerpacks that are compatible with dozens of handsets are expected to be available for $40 in May. link