Replacement battery fits 6 Saft compatible models. Specifications: 2000mAh, 4.8V, Ni-MH. Compatible with: Astralite 20-0001, PowerSonic A150321, Day-Brite A15032-1, Day-Brite CXL6VBXT, Day-Brite CXXL3GW, 0120894-A. Replaces: OSI OSA004. Saft replacement battery designed for Emergency Lighting devices. Engineered for consistent power output across many charge cycles.