Usage Tips:[Product Advantages]:This adapter can make listed for 18V battery lithium batteries use for 12V lithium cordless power tools,and let you enjoy the benefits of extended run-time of li-Ion batteries on your existing 12V tools. Easy to convert and save your money! [Compatible wih for 18V Batteries]This MT18MT12 adapter is for 18V battery, fit 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. [Use for 12Volt Power Tools]: Wide usage for 12V Lithium-ion Battery power tool CXT Tools DF031D DF331 DF0331D TD110D, JR103D, JR105D, HSS01D, HP332D, DC10SB DS032 HP330 HP331 HP331DSMJ HP332 TD110 DF331DSMJ HP332 and many other models, for 12 Volt line of tools, like fork, clamp, impact driver, drill, grinder, circular saw, LED light, ratchet, radio, inflator, jig saw, heated jacket, etc. [Safe Protection]Solid design, ABS high quality material,High temperature resistance, wear resistance and drop resistance, convenient to carry and easy to use. [Attention]:It cannot be used to charge the battery of a power tool, and the adapter cannot be plugged into any charger. If you need to charge the power , use the battery charger. If you need to charge the power , please use the battery charger. Colour:Black Material:ABS Package Contents: 1 x Adapter (No battery) 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.