Recent research shows that wires can be a hassle. Go wireless with the latest in Qi-enabled charging power! Wondering how it works? It's simple: Take off the back cover of your Samsung Galaxy S4. Place the Qi compatible charging card in proper alignment on the back of the battery. Close up the back cover and lay it on the charging pad.
•Samsung Galaxy S4 Qi Compatible Wireless Charging Dock w/Charging Battery Card
•No more wires!
•LED charge indicator light
•Comes with Qi compatible charging pad, AC adapter, and Qi compatible charging card
•Charging Current: 500-1000 mAh