CyberPower RB1290X3L UPS Replacement Battery Cartridge

The CyberPower RB1290X3L is a replacement battery cartridge that brings your compatible CyberPower UPS back to the runtime and reliability it delivered when new. It arrives as a single module that contains three 12-volt sealed lead-acid batteries rated at 9 amp hours each, already wired together so you can slide the cartridge into the UPS without special tools or complicated steps.

This cartridge is built for CyberPower models OL1000RTXL2U and OL1500RTXL2U, and it also refreshes the BP36V60ART2U external battery pack. If your rack-mounted server, point-of-sale system, or home office network gear is throwing battery warnings, swapping in the RB1290X3L often restores full backup capacity in minutes. The leak-proof case keeps electrolytes sealed, which means no weekly fluid checks and less time spent on battery maintenance.

CyberPower includes reusable packaging so you can send your spent batteries to a recycling center, helping you stay compliant with local disposal rules and reducing e-waste. Because this cartridge matches the original factory specifications, the UPS firmware continues to report accurate runtime estimates and charge levels. An 18-month limited warranty provides added confidence for anyone who relies on uninterrupted power to protect critical files, transaction logs, or phone calls.

• Works with CyberPower OL1000RTXL2U, OL1500RTXL2U, and BP36V60ART2U models
• Three factory-wired 12-volt, 9 amp hour sealed lead-acid batteries
• Leak-proof housing supports safe, maintenance-free operation
• Pre-assembled cartridge installs without special tools
• Reusable packaging supplied for responsible battery recycling
• Dimensions: 13.1 x 7.6 x 3.2 inches; weight: 18 pounds
• Backed by an 18-month limited warranty