APC Back-UPS Pro 10-Outlet 798 Joules 810-Watt 1350Va Indoor Network Surge Protector with Battery Backup in the Surge Protectors department at Lowes.com
APC Replacement Battery Cartridge #124 APCRBC124 B&H Photo Video
APCRBC124 - Apc - Power Supply Accessory, Battery Cartridge, Uninterruptible Power Supply (UPS)