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Four sealed 12V9A batteries in a replacement kit

RefurbUPS

RefurbUPS RB1290X4D 12V9A UPS replacement battery kit

SKU CH-41P0-VAK2A

Kit of four 12 V 9 Ah sealed lead-acid batteries for compatible CyberPower UPS units

  • Product typeKit/Package
  • Product weight28
  • Four 12 V 9 A SLA batteries deliver reliable UPS runtime
  • Factory-fresh cells ensure consistent high-rate discharge performance
  • Kit includes step-by-step installation instructions for quick replacement
  • 28 lb package ships as a complete, ready-to-install unit
  • Designed as a direct CyberPower RB1290X4D compatible replacement

Compatible CyberPower RB1290X4D kit

This replacement battery kit contains four 12V9A sealed lead-acid cells designed for CyberPower UPS units that use the RB1290X4D cartridge. It arrives factory fresh and includes step-by-step installation instructions so technicians can swap the pack without specialised tools. The kit suits IT teams maintaining rack-mounted or tower UPS systems that require a direct drop-in cartridge.

Four high-rate 12V9A cells

The decisive specification is the quartet of 12V9A high-rate discharge batteries wired to match the original cartridge voltage and capacity. If the UPS calls for a different voltage, amp-hour rating or physical layout this kit will not fit or meet runtime targets. Verify the host UPS lists RB1290X4D as the approved replacement before ordering.

Drop-in cartridge for supported UPS models

The pre-wired cartridge slides into the battery compartment of compatible CyberPower UPS models, reusing the existing connectors and mounting brackets. No external wiring harness or additional hardware is required, freeing rack space that a loose-cell rebuild would occupy. Installation follows the included guide and typically takes minutes per unit.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $67.99
Pricier than about 70% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameCyberPower
Product lineCyberPower RB Replacement Batteries
Product typeKit/Package

Questions about this item

What does the 12V 9Ah rating mean when the four batteries are installed in my UPS?

The kit supplies four 12-volt 9-ampere-hour sealed lead-acid cells that together provide the voltage and runtime your UPS expects for its internal battery string.

What connection standard do these replacement cells use to link with the UPS?

They use the standard F2 faston tab terminals found on CyberPower RB-series cartridges, so they plug directly into the existing battery harness.

Will the four-pack fit inside the battery compartment of a CyberPower RB1290X4D unit?

Yes, the kit is built to match the original cartridge dimensions and includes the hardware needed to secure all four cells in the same bay.

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