We thought this would solve our battery problem but turned out we needed to replace the whole doorbell so we don’t need this as it is now hardwired. Features & details Quickly recharge one or two Quick Release Battery Packs at once with the Charging Station. Simply slide batteries in and the indicator light will let you know when they’re fully charged and good to go. Compact in size, plugs into a standard outlet and fully charges both your batteries nearly twice as fast than with a Micro USB cord alone. Simply slide batteries in and the indicator light will let you know when they’re fully charged and good to go. Power adapter: 2.20in x 1.06in x 3.15in (56mm x 27mm x 80mm) / Charging Station: 2.36in x 2.32in x 2.40in (60mm x 59mm x 61mm) / Power Cord: 6ft (1.82m). Power Input: 100-240V, 50/60Hz, 0.5A / Power Output: 5V, 3A, 15W; 9V, 2A, 18W; 12V, 1.5A, 18W. Operating Conditions: 50°F (10°C) to 104°F (40°C). Quick Release Battery Packs sold separately