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Single 12V 18A sealed lead-acid battery in plastic casing

RefurbUPS

RefurbUPS AJC D18S 12V 18A UPS Replacement Battery

SKU CH-RTZ3-8K2AB

12V 18A sealed lead-acid battery kit for UPS backup power, 15 weight units

  • Product typeKit/Package
  • Product weight15
  • Ready-to-install kit includes one 12V 18A battery
  • Factory-fresh cells deliver reliable high-rate discharge performance
  • Comprehensive instructions simplify UPS battery replacement
  • New condition ensures full service life from day one
  • 15-unit weight makes handling and installation straightforward

Compatible replacement battery cartridge

The AJC D18S cartridge fits UPS units that require a 12V 18A sealed lead-acid cell. It ships as a single, factory-fresh battery ready for immediate installation. The package includes comprehensive replacement instructions so technicians can swap the cell without guesswork. Buyers who need a different voltage or capacity must select another part.

Capacity and runtime headroom

The 18A rating delivers the high-rate discharge current that many UPS models demand during short outages. It comfortably supports the load profiles those units were designed for until the battery reaches end of discharge. Runtime will fall short for extended backup requirements or for UPS chassis that call for larger ampere-hour cells.

Single 12V 18A SLA cell

This kit contains exactly one 12V 18A sealed lead-acid battery and nothing else. The form factor matches the original D18S footprint so it seats correctly in the battery compartment. Verify the UPS model specifies this exact voltage and amperage before ordering.

How it compares

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

Price $28.99
Cheaper than about 60% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameAJC Battery
Product lineAJC Battery
Product typeKit/Package

Questions about this item

Will the 12V 18A rating match the original battery in my existing UPS unit?

The cartridge supplies a 12V 18A high-rate discharge SLA cell, matching the voltage and capacity your UPS expects for a direct swap.

How can I confirm the new battery is performing correctly once installed?

Run a self-test from the UPS front panel or management software; a passed test and normal runtime during a brief power pull show the 18A cell is working.

Does the kit include cables or mounting hardware, or must I buy them separately?

The package contains one factory-fresh 12V 18A battery and printed installation instructions; no extra cables or brackets are included.

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