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Rectangular sealed AGM battery with top terminals

BatteryJack inc.

BatteryJack inc. PowerStar UB12550 12V 55Ah UPS replacement battery

SKU CH-A3VH-KF1AX

12 V, 55 Ah sealed AGM battery with over 90 % gas recombination for maintenance-free UPS backup

  • Reliable backup power with 12V 55Ah capacity
  • Long service life of 4-7 years expected
  • Zero upkeep required thanks to maintenance-free design
  • Safe operation in any position with sealed construction
  • Direct 100% OEM replacement for UPS systems

12 V 55 Ah AGM UPS battery

The PowerStar UB12550 is a sealed 12 volt 55 ampere-hour lead-acid battery built with absorptive glass mat technology. It serves as a direct replacement for uninterruptible power supplies and backup devices that require a Group 22NF form factor. The maintenance-free design uses gas recombination to retain over 90 percent of generated gas during normal operation. No electrolyte checks or water top-ups are needed throughout its expected service life.

Check voltage capacity

Verify that the existing UPS or backup unit specifies a 12 volt 55 Ah battery and accepts the Group 22NF case dimensions. Confirm the terminal type and polarity match the original battery to ensure a secure connection. The sealed construction allows mounting in any orientation, but the physical footprint must fit the equipment bay. Ensure the charger voltage profile is compatible with AGM chemistry.

Suits UPS owners needing a drop-in Group 22NF

This unit fits users who want a 100 percent OEM-compatible swap with a four-to-seven-year expected life and a three-year warranty on UPS applications. It is not suitable for systems requiring a different voltage, higher ampere-hour rating, or an alternative case size. Buyers needing lithium chemistry, wet-cell access, or non-standard terminal configurations should look elsewhere.

Highlights

  • Reliable backup power with 12V 55Ah capacity
  • Long service life of 4-7 years expected
  • Zero upkeep required thanks to maintenance-free design
  • Safe operation in any position with sealed construction
  • Direct 100% OEM replacement for UPS systems

Specifications

No published specifications for this item yet.

Questions about this item

Does the UB12550 come with cables or terminals, or do I need to buy them separately?

The battery is a direct 100% OEM replacement with standard terminals; mounting hardware and cables are not included and must be sourced from your UPS or purchased separately.

Should I choose the 55 Ah version or a different capacity for my UPS?

The UB12550 is a 12 V 55 Ah Group 22NF unit; select it only if your UPS specifies this exact voltage, capacity and case size.

What does the 55 Ah rating mean for actual backup time in my UPS?

The 55 Ah capacity is measured at the standard discharge rate; real runtime varies with your UPS load, typically providing minutes to an hour of backup.

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