The APCRBC163-UPC consists of (2) 12V580W seal-lead acid batteries and is compatible with UPS Models; BGM1500, BGM1500B, BR1500MS, BR1500MS2, BGM1500-US. Contact us with any questions regarding our UPC products! For more than 15 years, UPC has become a trusted manufacturer of high quality UPS replacement battery cartridges. All products are “Assembled in the USA” allows UPC to provide real value to our customers. UPC enhances its' product offerings through a dedicated new product development process so we have the replacement battery cartridge you need at the time you need it. Our products are readily available in the US and Canada.