APC Back-UPS ES Replacement Batteries Make your APC Back-UPS ES run like new again with a replacement battery set from Power Pros. Genuine APC and BTI kits include all necessary cabling, connectors, and tray - no assembly required.  These battery kits are 100% compatible with APC ups systems and come with a full 1 year warranty (APC) or 18 month warranty (BTI). If you don't see your application listed, please give us a call at 1-888-330-2538 for expert assistance.     Model Battery BE500U, BE500R RBC2 BE350C, BE350G, BE350U, BE350T RBC35 BE350 RBC45 BE500 RBC46 BE750G, BE725BB, BE650BB, BE650R, BE650G RBC17