The UPC APCRBC143-UPC Pre-charged Replacement Battery Pack is designed for APC RBC143 UPS Systems and manufactured to OEM specifications for uninterrupted power during power outages and other disruptions to the main power supply. This unit is an emergency power supply for computers, data centers, telecommunication devices and other electrical equipment, preventing the loss of data and productivity. Maintenance-free lead-acid battery is sealed and leak-proof with suspended electrolyte and battery is pre-charged so it can be used immediately after purchase. This model comes complete with all required connectors, cable, fuses and metal enclosures with no assembly required. Made in America.