Specifications: Voltage: 18V Capacity: 4000mAh Battery Type: Lithium-Ion Replacement Part: Makita BL1815, BL1830, BL1835, BL1840, BL1850, BL1860, LXT400, 194204-5, 194205-3, 194230-4, 194309-1 Compatible Models: Makita: BCS550, BCS550F, BCS550RFE, BCS550Z, BCF201, BCF201Z, BCL180, BCL180F, BCL180W, BCL180Z, BCL180ZW, BCL182, BCL182Z, BDA350, BDA350F, BDA350RFE, BDA350Z, BDA351, BDA351RFE, BDA351Z, BDF450, BDF451, BDF451RFE, BDF451Z, BDF452, BDF452RFE, BDF452RHE, BDF452SHE, BDF452Z, BDF453RHE, BDF453SHE, BDF453Z, BDF454F, BDF454RFE, BDF454Z, BDF456RFE, BDF456Z, BFR550F, BFR550L, BFR550RFE, BFR550Z, BFR750, BFR750F, BFR750L, BFR750RFE, BFR750Z, BFS450, BFS450F, BFS450RFE, BFS450Z, BFS451RFE, BFS451Z, BGA402RFE, BGA402Z, BGA452, BGA452F, BGA452RFE, BGA452Z, BGD800, BGD800RFE, BGD800Z.