Protect electronics from damage caused by outages by ensuring your backup is operating properly. Replacement cartridge features hot-swap functionality for continuous power flow, even during battery changes. Safe, reliable and maintenance-free, it features the absolute minimum number of connections, keeping installation quick and easy. Cartridge #17 (RBC17). Battery Type: Sealed Lead-Acid; Battery Size: RBC17; For Use With: APC® K650-AS, BK650EI, 515-970, BE650BB, BE650BB-CN, BE650G, BE650R, BE650R-CN, BE650Y-IN, BE700-AZ, BE700-CP, BE700-KR, BE700-RS, BE700-SP, BE700-UK, BE725BB, BE750G, BE750G-CN, DL650T, DL725VT, BP700UC, BN600; Material(s): Lead-Acid.