Fit for 20V and 18V Lithium- battery. Wire length 40510mm. Work With for 20-Volt Lithium-battery.This battery of ours is a - battery adapter that works with both for 20V / 18V,replacement battery for DCB180 DCB206 DCB207 etc. working principle: Connect this product to for 20V lithium- battery, and use two wires to draw out the battery power for use by other devices of the same voltage, as a helper for DIY players, such as small DC fans, heating clothing, electric toy modification, etc.. This product is only used as an output, not as an input to charge the battery Colour:yellow :PC+ABS Package Contents: 2 x 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.