Usage Tips:[Compatible For 18V Batteries]This MT18 MT12 adapter is compatible For 18V battery, compatiable for BL1860B BL1860 BL1850B BL1850 BL1840 BL1830B BL1830 BL1820 BL1815, replace for battery to for 12 volt Lithium-ion Battery Battery BL1021B (BL1016) BL1020B BL1041B BL1040B BL1040 BL1015 BL1020B 197402-0 197390 CXT fit 12-Volt Cordless Tools(Battery not included)[Safe Protection]Solid design, plastic material,High temperature resistance, wear resistance and drop resistance, convenient to carry and easy to use.The products are only used for flexible conversion between one tool and another lithium battery, and do not involve any other !The products are only converter, not charger, not battery, not machine, also can not recharge battery by it.Due to different production batches, labeling is random and does not accept designation and does not affect use.Note:Installation guide not included, we strongly recommend you professional installation.Please check as much as possible to make sure the item is what you need.Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect UseColor: BlackMaterial: plasticPackage Contents:1 x Battery Adapter(Adapter only, tool and battery not included)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.