APC UPS Battery Replacement for APC UPS Model BE550G and select others (APCRBC110) UPS Accessories - Newegg.com
APC Back-UPS Pro 1500VA 10-Outlet/2-USB Battery Back-Up and Surge Protector Black BN1500M2 - Best Buy
APC APC BackUPS 6 Outlets 450VA 255W 6-Outlet 180 Joules 255-Watt 450Va Indoor AC Surge Protector with Battery Backup in the Surge Protectors department at Lowes.com
Amazon.com: APC Back UPS Pro 850VA BX850M Compatible Replacement Battery by UPSBatteryCenter : Health & Household
APC Replacement Battery Cartridge #140 - UPS battery - lead acid - 960 Wh | Dell USA
APC UPS, 1000VA UPS Battery Backup & Surge Protector with AVR, LCD Uninterruptible Power Supply, Back-UPS Pro Series (BX1000M) - Walmart.com