In Pictures: 9 wireless battery chargers: No power...
Anker Qi-Enabled Single-Position Wireless Charger
The Anker wireless charging pad has not one, but two display lights on its face. A power indicator glows green if the pad is connected to a power source; a charge indicator lights up green when it is charging your phone but flashes red when your phone is placed incorrectly on the pad (it will stay red if it has malfunctioned). Standard graphics on the face of the charger show where you should place your phone.
As with most wireless chargers, the 6.1 × 3.5 × 0.3 in. Anker will power your device about 15% to 20% slower than a wired charger. It plugs into a power source through a micro USB port on the bottom edge.
In Pictures: 9 wireless battery chargers: No power? No problem!