Never be without power with the APC RBC1 Replacement Battery, which is compatible with the BK200 and BK200B models. This replacement battery is tested and approved to restore the performance of your APC Uninterrupted Power Supply, and provides a long battery life of 3 to 5 years. This battery is reliable, safe, and contains a minimum number of connections, which saves you time. No network downtime is required to install this battery as this battery is hot-swappable.