The RB1290X6D UPS Replacement Battery Cartridge restores life to CyberPower UPS systems that have weak or completely depleted internal batteries. The RB1290X6D contains six 12V/9AH replacement batteries, certified to meet or exceed original manufacturer specifications. These leak-proof, sealed lead-acid batteries never require replacement fluid. The pre-assembled cartridge installs easily into your CyberPower UPS system and is shipped with reusable packaging which can be used for delivering expired batteries to a suitable recycling center. The RB1290X6D comes with instructions, recycling information, and an eighteen-month warranty.