The Magic Flight Launch Box Battery Charger lets you charge two NiMH AA in around four hours. With this product, you will know your batteries are fully charged because the charger’s indicator light will turn green. This product features Magic Flight’s signature glyph and is designed to fit inside your Launch Box Kit perfectly. This Battery Charger can power up any NiMH battery, including Magic Flight’s own Glyph Batteries and the Powerex 2700 mAh batteries. This charger also comes with a barrel plug at the bottom allowing you to charge batteries with the Power Adapter 2.1's Car Accessory.