Ryobi BPP-1813 battery by Amstron is designed for use with CCD-1801. The Amstron PT-RYO15 is designed to replace OEM battery part numbers BPP-1813, BPP-1817, BPP-1820. Amstron power tool batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original equipment manufacturer specifications. • Chemistry: NiCD • Ratings: 18V 2000mAh • Dimensions (LxWxH): 5.35'' x 3.07'' x 4.25'' • Warranty: 1 Year