One extra set of (2) Logo NiMH AA rechargeable batteries with protective branded black caps. These batteries have been designed specifically for use with the Launch Box and are engraved with the Magic-Flight Glyph on the bottom for easy identification. They employ proprietary battery chemistry to deliver an experience tailored for the Launch Box, similar to using the Magic-Flight Power Adapter on a setting between 70% and 80%. The glyph batteries will last considerably longer than our previous battery style; the user can expect between two and three complete trenches, a faster heat up time and a hotter trench temperature during use. These batteries will charge normally in all stock Magic-Flight chargers.