This product is matched with -M series 18V lithium-ion battery, and the battery power can be taken out through two wires for use in other devices with the same voltage. It is a good helper for DIY players, such as electric toy modification, LED lights and other small electric devices, etc. This product is small and light, easy to carry, flexible to install, can be used indoors or outdoors, and can also be well fixed , machine, DIY product with screws; Easy to install,locks on you battery very well. It can provide DC 18V power for the tools. (Such as toy cars, LED lights, various tools). Colour:Black Material:plastic 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 Use Package Contents: 2 * 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.