Designed by APC by Schneider Electric exclusively for APC UPS's for complete compatibility with the intelligent battery management system. Tested and approved to restore the performance of your APC UPS. Maintains UPS safety certifications (UL,VDE,CSA) and lifetime equipment protection policy (as applicable). APC RBCs are safe,reliable and contain a minimum number of connections saving valuable time. Because APC RBCs are hot-swappable,no network downtime is required in order to install them.