Compatible with for 20V for 18V Li-ion battery. Suitable for 12V M12 Cordless Tools. It provides over-voltage, over-current, overheats and short circuit protection. Compatible with for M12 Cordless Power Tool: 2470-21 2471 2471-20 2471-21 2471-22;2590-20 49-24-0145 49-24-0146 C12 D C12 DD C12 HZ C12 IC C12 ID C12 IW C12 PC C12 48-11-2401 2207-20 2207-21 2238-20 2238-21 2239-20 2239-21 2276-20NST 2276-21 2276- 21NST ;2277-20 2277-20NST Colour:Red & Black Material:ABS Package Contents: 1 * DM20M12 Battery Adapter 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.