[Compatible With Makita 18V Batteries] This MT18 MT12 adapter is compatible with Makita 18V batteries, including BL1860B, BL1860, BL1850B, BL1850, BL1840, BL1830B, BL1830, BL1820, BL1815. It can also be used as a replacement for Makita 12-volt Lithium-ion batteries such as BL1021B (BL1016), BL1020B, BL1041B, BL1040B, BL1040, BL1015, 197402-0, 197390, CXT, and fits 12-volt cordless tools. (Battery not included) [Safe Protection] Solid design with high-quality plastic material. Resistant to high temperatures, wear, and drops. Compact and easy to carry, simple to use. This product is designed solely for converting between compatible lithium batteries and tools. It is not intended for use with any other brands. This item is a converter only. It is not a charger, battery, or power tool, and it cannot recharge batteries. Due to variations in production batches, labeling may vary randomly. Designation requests cannot be accepted, but this does not affect functionality. Note: Installation guide is not included. Professional installation is strongly recommended. Please verify compatibility to ensure this item meets your needs. Tips: Product design may be updated periodically. Due to different manufacturing batches, the actual product may have slight variations or color differences, which do not affect performance. Color: Black Material: Plastic Package Contents: 1 x Battery Adapter (adapter only, tool and battery not included)