The APC APCRBC123 UPS Replacement Battery Cartridge # 123 is a black, desktop/freestanding UPS battery that is compatible with various APC models such as SMT750RM2UNC, BN1350G, and BR1000G. It features a voltage compatibility of 12 V and 24 V, a 6-month manufacturer warranty, and comes with one outlet. The battery cartridge is equipped with a fused feature and has dimensions of 8 inches in length, 3 inches in height, and 6 inches in width. Made by SafeAMP, this UPS replacement cartridge is designed for reliable power protection and distribution.