Black & Decker FSB12 replacement battery provided by AtBatt.com is designed to replace OEM part numbers A12, A12-XJHPB12, FS120B, FS120BX, FSB12. Amstron brand power tool batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original manufacturer specifications. • Chemistry: NiCD • Rating: 12V 1.2Ah • Dimensions (L x W x H): 4.32'' x 3.13'' x 2.45'' • Warranty: 1 Year