EXTERNAL BATTERY FOR UPS

A battery cartridge assembly is configured to be positioned behind a UPS having a back side facing a first direction. The battery cartridge assembly includes a housing having a front side and a back side. The front side of the housing is configured to face the back side of the UPS when positioning the housing of the battery cartridge assembly behind the UPS. The battery cartridge assembly further includes a first connector provided on the back side of the housing. The first connector is configured to accept a UPS cable. The first connector faces the first direction. The battery cartridge assembly further includes a cutout in the housing. The cutout is configured to route a UPS cable between the UPS and the first connector.