In the E-world where businesses can't stop and downtime is measured in dollars, American Power Conversion (APC) provides protection against some of the leading causes of downtime, data loss and hardware damage: power problems and temperature. As a global leader in power availability solutions, APC sets the standard in its industry for quality, innovation and support. Its comprehensive AC and DC power solutions, which are designed for both home and corporate environments, improve the manageability, availability and performance of sensitive electronic, network, communications and industrial equipment of all sizes.These batteries are designed for BK200 or BK200B. Before the installation you should verify the battery configuration and the number of batteries inside the unit. If your unit has one battery, you will need an RBC2 unit. If your unit has two batteries, you will need an RBC1 unit. The use of any non-authentic replacement batteries in an APC product may result in a void of warranty.