BATTERY NOT INCLUDED(Compatible with Milwaukee M18 Battery) Compatible with Milwaukee M18 BatteriesThis cordless stick vacuum (battery not included) is engineered to work seamlessly with Milwaukee M18 18V lithium-ion battery series, including:48-11-1820, 48-11-1822, 48-11-1840, 48-11-1841, 48-11-1828, 48-11-1850, 48-11-1852, 48-11-1860, 48-11-1862, 48-11-1880, and more.