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A single sealed 12V 9Ah lead-acid battery in a rectangular plastic case

RefurbUPS

RefurbUPS MK ES9-12 12V 9Ah ups replacement battery

SKU CH-HJMC-J77MW

A 12 V 9 Ah sealed lead-acid cartridge restores runtime to compatible UPS units

  • TypeKit/Package
  • Weight7
  • 12 V 9 Ah capacity keeps UPS runtime stable
  • Sealed lead-acid design prevents leaks and spills
  • Factory-fresh cells deliver reliable backup power
  • Drop-in cartridge fits existing UPS slots
  • Includes step-by-step replacement instructions

Compatible UPS Battery Kit

This MK ES9-12 compatible kit supplies a single 12V 9Ah sealed lead-acid battery designed as a direct replacement cartridge for compatible UPS units. It arrives factory fresh and includes comprehensive installation instructions so technicians can swap the expired cell quickly and restore backup power.

Capacity and Runtime Headroom

The 9Ah high-rate discharge cell delivers the ampere-hours specified by the original equipment manufacturer, supporting typical load profiles until the UPS reaches its low-voltage cutoff. Runtime scales with the connected load; heavier draws will exhaust the available capacity sooner than lighter ones.

Upgrade From Expired OEM Cartridge

This kit replaces an exhausted original battery cartridge when the UPS signals a replacement alert or runtime falls below operational requirements. The jump is worth it when the existing pack no longer holds sufficient charge to bridge outages or complete graceful shutdowns.

Highlights

  • 12 V 9 Ah capacity keeps UPS runtime stable
  • Sealed lead-acid design prevents leaks and spills
  • Factory-fresh cells deliver reliable backup power
  • Drop-in cartridge fits existing UPS slots
  • Includes step-by-step replacement instructions

Specifications

BrandMK Battery
SeriesMK Battery
TypeKit/Package
Weight7

Questions about this item

Will the 12 V 9 Ah battery fit the same compartment as my current MK ES9-12 unit?

Yes, it matches the original MK ES9-12 form factor and voltage so it slides into the existing UPS tray without modification.

How can I verify the 12 V 9 Ah battery is performing correctly once installed?

The UPS self-test will report a healthy voltage and hold the rated runtime during a simulated power cut.

Does the package include the 12 V 9 Ah battery plus any cables or brackets?

The kit supplies one factory-fresh 12 V 9 Ah SLA battery and printed replacement instructions.

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