Amazon.com: APC Smart-UPS C 450 Rack Mount 1U I (SC450RMI1U) Compatible Replacement Battery Kit : Electronics
Battery kit for APC Smart UPS SC 250/450 and APC Powerstack 250/450 replaces APC
APC Smart-UPS SC 450 SC450RMI1U Uninterruptible Power Supply - NO BATTERIES | eBay
APC Backup-UPS ES 450 8-Outlet Backup Surge Protector BE450G - Without Battery | eBay
APC APC BackUPS 6 Outlets 450VA 255W 6-Outlet 180 Joules 255-Watt 450va AC Surge Protector with Battery Backup in the Surge Protectors department at Lowes.com
APC 450 AT 6V 12Ah UPS Replacement Battery: BatteryClerk.com UPS