Compatible 18V Batteries 48-11-1813, 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828, 48-11-1835, 48-11-1837, 48-11-1840, 48-11-1850, 48-11-1852, 48-11-1860, 48-11-1865, 48-11-1880, 48-11-1890. Compatible 12V Batteries 48-11-2401, 48-11-2402, 48-11-2411, 48-11-2412, 48-11-2420, 48-11-2425, 48-11-2430, 48-11-2440, 48-11-2450, 48-11-2460.