Induction charger for Iphone 3G 4G Ipod Touch NEW POWERMAT Home and Office Charging Mat. Buyer must charge a 20 percent restocking fee for return item. The Home & Office mat uses magnetic induction and Powermat proprietary technology to charge your handheld devices The Home & Office Mat can charge 3 Powermat-enabled devices at the same time, as fast as the original adapter. A unique sound tells you that a solid connection has been made and your device is charging.