BTI UPS Replacement Battery Cartridge

Don't get caught with a dead UPS, replace your battery today with the RBC21 replacement battery for APC models BF400C, BF500, BF500BB, BF500U. Manufactured to BTI's highest quality standards, this sealed lead acid battery meets or exceeds the original manufacturer's specifications. At BTI quality is an obsession and BTI stands behind every battery product it builds. BTI... true to the original.