[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, fitting 12-volt cordless tools. (Battery not included) [Safe Protection] Solid design with high-quality plastic material. Resistant to high temperature, wear, and impact. Compact and easy to carry, simple to use. This product is designed solely for flexible conversion between compatible tools and lithium batteries and is not affiliated with any brand. This item is a converter only, not a charger, battery, or power tool, and cannot recharge batteries. Due to different production batches, labeling may vary randomly. Specific labeling requests cannot be accommodated, but this does not affect functionality. Note: Installation guide not included. Professional installation is recommended. Please verify compatibility to ensure the product meets your needs. Tips: Product design may be updated periodically. Due to manufacturing variations, slight differences in appearance or color may occur, which do not affect performance. Color: Black Material: Plastic Package Contents: 1 x Battery Adapter (Adapter only, tool and battery not included)