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Four sealed lead-acid batteries in a kit

RefurbUPS

RefurbUPS ONEAC ON900A-SN 4x 6V12A UPS replacement battery kit

SKU CH-FYAH-YRHSW

Kit of four 6 V 12 Ah sealed lead-acid batteries for ONEAC ON900A-SN UPS units

  • Product typeKit/Package
  • Product weight20
  • Four 6V12A SLA batteries replace the ONEAC ON900A-SN cartridge
  • Factory-fresh cells deliver reliable high-rate discharge performance
  • Kit includes comprehensive installation instructions for straightforward replacement
  • Twenty-pound package ships complete with all four batteries
  • Compatible design restores UPS backup power without modification

Compatible replacement kit

The RefurbUPS ONEAC ON900A-SN kit supplies four 6V12A sealed lead-acid batteries built to match the original cartridge. It is intended for administrators who maintain a ONEAC ON900A-SN UPS and need a factory-fresh set for scheduled swap-outs.

Practical limits of SLA chemistry

Sealed lead-acid cells deliver high-rate discharge for short runtime windows but lose capacity over repeated deep cycles. The kit restores the original ampere-hour rating; it does not extend runtime beyond the UPS design or alter the charging profile.

Build quality and daily implications

Each battery is supplied new and includes step-by-step installation instructions for a straightforward cartridge exchange. The four-unit pack matches the OEM form factor so it seats in the existing tray without modification, letting technicians complete the swap during a planned maintenance window.

How it compares

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

Price $38.99
Typical for this category: the median of 3,915 items is $39.99.

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Specifications

Product
Brand nameOneAC
Product lineOneAC Batteries
Product typeKit/Package

Questions about this item

Should I choose a different battery kit or is this the only capacity available for the ON900A-SN?

This kit is the specific compatible replacement for the ON900A-SN UPS and contains four 6V 12A high-rate discharge SLA batteries.

What runtime will the four 6V 12A batteries deliver once installed in my ON900A-SN UPS?

The four 6V 12A batteries restore the original capacity of the ON900A-SN UPS, providing the runtime the unit was designed to deliver at its rated load.

What connection standard do the batteries use and does it limit the UPS output?

The batteries use standard SLA terminals that match the ON900A-SN internal wiring, so they do not impose any additional limit on the UPS output.

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