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Rectangular 12V 55Ah VRLA AGM sealed lead-acid battery in black case

BatteryJack inc.

BatteryJack inc. 12V 55Ah VRLA AGM ups replacement battery

SKU CH-RJDY-CRGAA

A 12 V sealed lead-acid battery with AGM technology, 55 Ah capacity and maintenance-free operation for UPS backup

  • Ready for installation with 100% OEM compatibility
  • Sealed AGM design prevents electrolyte leakage in any position
  • Gas recombination system retains over 90% of generated gas
  • Maintenance-free operation needs no water or gravity checks
  • Rated 12V 55Ah for extended backup runtime

12V 55Ah VRLA AGM UPS replacement battery

This 12 volt 55 ampere-hour sealed lead-acid battery uses absorptive glass mat technology for maintenance-free operation. It serves as a direct OEM replacement for uninterruptible power supplies and backup devices. The non-spillable construction meets international air transport requirements for safe shipping.

Sustained load behaviour

The AGM system absorbs sufficient electrolyte to deliver steady service and long life during extended float use. Gas recombination handles over 90 percent of gas generated in normal operation, reducing pressure build-up. No water top-ups or specific gravity checks are needed throughout the expected four to seven year service life.

Installation and common issues

The sealed case allows mounting in any orientation without electrolyte leakage from terminals or housing. Terminal dimensions and polarity should be verified against the original unit before fitting. Over-tightening terminal bolts can damage the sealed posts, while under-tightening increases resistance and heat under load.

Highlights

  • Ready for installation with 100% OEM compatibility
  • Sealed AGM design prevents electrolyte leakage in any position
  • Gas recombination system retains over 90% of generated gas
  • Maintenance-free operation needs no water or gravity checks
  • Rated 12V 55Ah for extended backup runtime

Specifications

No published specifications for this item yet.

Questions about this item

Does the 12V 55Ah AGM battery generate noticeable heat or noise during continuous UPS operation?

The sealed AGM design uses gas recombination of over 90 percent, so the battery runs silently with no moving parts and minimal heat during normal float charging.

What existing UPS hardware is required for this 12V 55Ah replacement to function?

A compatible UPS chassis designed for a single 12 volt 55Ah VRLA AGM block with matching terminal layout and charging voltage.

Will this 55Ah AGM battery work in a UPS that originally shipped with a lower capacity 50Ah unit?

Yes, the 55Ah rating is a direct capacity increase and the 12V AGM chemistry matches the original 50Ah specification for OEM replacement.

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