Looking for an APC RBC11 battery? Then you've come to the right place. We have been selling batteries for APC RBC11 UPSs online since 2003 and will have the correct battery for your UPS in stock, available for next day delivery. Use our APC RBC11 battery guide below to find a suggested battery for your UPS and compare it to the battery fitted to your RBC11. Need help? Simply contact us.