This adapter is compatible with 20v/60v MAX XR & M18 RED Lithium Battery Packs. It's designed exclusively for V6 series cordless vacuum cleaners. (Please do not attempt to use with other types of cordless vacuums, such as V7/V8 etc.). Safety / Zero Risk: Features built-in undervoltage protection BMS. Cut-off voltage is less than or equal to DC approximately 16v. Freely share higher voltage 20v XR & M18 Batteries, reducing downtime and waiting. If not in use for an extended period, please detach from the battery. The adapter does not support charging for 20v XR & M18 RED Lithium Batteries (use charger). Color: gray Material: plastic Package Contents: 1 x Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.