For MILWAUKEE M18 Cordless LITHIUM-ION System Tools. 1-4X FOR Milwaukee M18 Battery 48-11-1880(Choose). For Milwaukee 48-11-1811, 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828, 48-11-1840, 48-11-1841, 48-11-1850, 48-11-1852, 48-59-181, 48-59-1850.