Always have power with this safe and reliable APC RBC21 Replacement Battery, which is compatible with the BF400C, BF500, BF500BB, and BF500U 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. The APC RBC21 Replacement Battery also includes instructions on how to properly dispose of spent batteries, making this battery an environmentally conscious choice. All required connectors are also included.
