The CyberPower RB1290X3L UPS Replacement Battery Cartridge is a high-quality battery designed specifically for CyberPower UPS systems. This black battery cartridge has a compact size with a height of 6.40 inches and is compatible with the CyberPower RB1290X3L model. Made in China, this replacement battery cartridge ensures reliable power protection for your computer systems and networking devices. With a single outlet, this battery cartridge is a convenient and essential component for maintaining continuous power in the event of a power outage.