APC Back-UPS Pro Replacement Batteries Make your APC Back-UPS Pro 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 BP420, BP420C, BP420PNP, BP420S, BP500U, BP350UC, BP350U RBC2 BP650SC, BP650S, BP650PNP, BP650SX107 RBC4 BP1100, BP1000 RBC6 BP1400, BP1400X116 RBC7