Japanese electronics company Hitachi Maxell, in partnership with Murata, has unveiled the Air Voltage, a wireless battery charging system for digital devices, and a separate model for the Apple iPad.

Digital devices are simply placed on the charging device. Technically, there is still a cable involved, but it only connects the charging pad to the power source.

“As smartphones and tablet PCs become more essential to our lives, these devices must be recharged more and more frequently, bringing a rising need for them to be equipped with wireless recharging functions,” said Murata in its press release. “We have thus applied our original circuit design technologies and module manufacturing technologies to develop a field-coupled wireless recharging system and are working to implement its practical use.”