【Superior Compatibility】Not only compatible with DeWalt 18v - 20v lithium batteries(DCB200, DCB201, DCB203, DCB203, DCB204, DCB205, DCB206 etc.), but also compatible with Milwaukee M18 18V lithium compact batteries(11-1820, 11-1822, 11-1828, 11-1840, 11-1841, 11-1850 etc.), Convert them to Hitachi&Metabo HPT18V lithium batteries.