[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 made of plastic material offers high temperature resistance, wear resistance, and drop resistance. Compact and lightweight for easy portability and convenient 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—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 accommodated, but this does not affect functionality. Note: Installation guide is not included. Professional installation is strongly recommended. Please verify all compatibility details to ensure the product 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)