RBC7 Battery Replacement for APC SmartUPS 1400 - YouTube
APC Smart-UPS 1400: Bottom red light (battery bad) remains on even after replacing battery in this UPS, but it goes green immediately on other UPSes.... What do? : r/sysadmin
APC Smart-UPS 1400 Rack Mount SU1400RMJ2U replacement battery pack (rechargeable, high rate)