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Rectangular sealed lead-acid battery with screw terminals, grey plastic case

BatteryJack inc.

BatteryJack inc. UB12550 12V 55AH Group 22NF UPS Replacement Battery

SKU CH-ERSZ-HWDHZ

12V 55AH sealed lead-acid AGM battery in Group 22NF size for UPS and mobility devices

  • Advanced AGM technology delivers maintenance-free operation
  • 12 V 55 Ah capacity powers UPS and mobility devices
  • Direct 100 % OEM replacement for Group 22NF units
  • Compact 9.0 x 5.4 x 8.1 inch footprint fits standard trays
  • Expected 4-7 year service life reduces replacement frequency

12 V 55 Ah UPS replacement battery

The BatteryJack UB12550 is a sealed lead-acid battery built with AGM technology for maintenance-free operation. It serves as a direct 100 % OEM replacement for UPS units, wheelchairs and mobility equipment that require a Group 22NF form factor.

Thermal and power behaviour in service

The AGM construction allows the battery to operate without watering or ventilation requirements under normal float charge conditions. Self-discharge is low, so the unit holds charge during standby periods and delivers consistent 12 V output without excessive heat build-up during typical discharge cycles.

55 Ah capacity at 12 V

This single rating determines whether the battery can support your load for the required runtime; verify the amp-hour demand of your UPS or mobility device against the 55 Ah specification before purchasing.

Highlights

  • Advanced AGM technology delivers maintenance-free operation
  • 12 V 55 Ah capacity powers UPS and mobility devices
  • Direct 100 % OEM replacement for Group 22NF units
  • Compact 9.0 x 5.4 x 8.1 inch footprint fits standard trays
  • Expected 4-7 year service life reduces replacement frequency

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the UB12550 in my UPS, and which step do people most often get wrong?

Insert the battery so the terminals match the UPS polarity, then secure each terminal with the supplied screws; the step most often missed is tightening those screws fully, which prevents a solid connection.

What maintenance or replacement will the UB12550 need later?

The sealed AGM design is maintenance-free; plan to replace the battery after 4 to 7 years of expected service life.

What limit appears first when the UB12550 runs under sustained load?

The 55 Ah capacity determines how long the UPS can supply power; once that stored energy is depleted, the battery must recharge before it can support another extended outage.

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