Amazon.com: APC Smart-UPS RT 3000 RM XL SURTA3000RMXL3U 12V 4.5Ah UPS Battery - This is an AJC Brand Replacement : Electronics
SURT1000RMXLT Battery Set | APC
New Batteries for a 3000VA APC UPS - Battery Replacement and Testing - YouTube
APC by Schneider Electric Smart-UPS X 3000VA Rack/Tower LCD 100-127V - 4U Rack-mountable - 3 Hour Recharge - 6 Minute Stand-by - 110 V AC Input - 120 V AC Output -