Works for 18V Series Lithiun Battery Fits replacement for V20 Tools( Not Compatible with OLD 20v & 19.2v C3 Tools, and Not for Batteries), ,for 20V Battery Replacement. Use with for V20 system cordless tools only (not compatible with Old for 20V tools). Perfectly for 18V Li-ion Batteries BL1830 BL1840 BL1850 BL1860 BL1860B BL1850B BL1830B BL1820 BL1815, converting your for battery into for Crafts-man V20 volt Lithium-ion Battery. compact design for easy installation. If not used for a long time, please separate from the battery. Do not use the adapter to charge the battery Remove the adapter when you need to charge the battery. Type: Battery Adapter color:Red+black Material:plastic Package Contents: 1 x MT18MAN 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.