Battery kit for APC Smart UPS 2200/3000/5000 replaces APC RBC12
Best Buy: APC Back-UPS Gaming 1500VA 10 Outlet/3-USB Battery Back-up and Surge Protector Midnight Black BGM1500B
Amazon.com: APC UPS 1000VA Sine Wave UPS Battery Backup and Surge Protector, BR1000MS Backup Battery Power Supply with AVR, (2) USB Charger Ports : Electronics
Amazon.com: 1500VA/900W Ups Battery Backup and Surge Protector,Computer Uninterruptible Power Supply Units,SKE Ups Power Supply : Electronics
UPS Battery Backup Buying Guide | Eaton
Tripp Lite SmartOnline 1.5kVA SU1500XL Replacement Battery Set - 100% Compatible