The RB1290X6A UPS Replacement battery cartridge restores life to CyberPower UPS systems that have weak or completely depleted internal batteries. The RB1290X6A contains four 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 RB1290X6A comes with instructions, recycling information, and an eighteen-month warranty.