Battery Specifications: Voltage: 12V. Capacity: 4000mAh. Color: Black. Battery Type: NI-MH Battery. Package: 2 batteries. Compatible P/N: 1201, LIN-1201, 218-787 Compatible With: Lincoln 12v Grease Guns 1200, 1240, 1242, 1244, LIN-1200, LIN-1240, LIN-1242, LIN-1244.