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Rectangular 12V 55Ah AGM battery with sealed grey case and two terminals

BatteryJack inc.

BatteryJack inc. 12V 55Ah Deep Cycle UPS Replacement Battery

SKU CH-TK6R-NX38W

12V 55Ah deep-cycle AGM battery with sealed, maintenance-free construction and over 90% gas recombination for UPS, marine and backup power

  • Reliable power for UPS systems backed by 100% OEM compatibility
  • Deep-cycle AGM design delivers steady 12V 55Ah performance
  • Maintenance-free sealed construction eliminates water checks and electrolyte leakage
  • Over 90% gas recombination extends expected service life to 4-7 years
  • Non-spillable build meets IATA standards for safe operation in any position

12 V 55 Ah Deep-Cycle UPS Battery

This sealed AGM battery delivers 12 volts and 55 ampere-hours of capacity for UPS units and backup systems. It is built as a direct OEM replacement so installers can swap it without wiring changes. The maintenance-free design suits server rooms, network closets and off-grid power setups that need reliable reserve energy.

Sealed AGM Thermal Behaviour

The absorptive glass mat construction recombines over 90 percent of gas generated during normal charge and discharge cycles. Because the electrolyte is fully absorbed in the glass-fibre separators, the case stays sealed and produces no liquid leakage or vented fumes. Internal resistance remains low, so self-heating under typical float loads stays minimal and no active cooling is required.

Non-Spillable Transport Certification

The battery meets International Air Transport Association non-spillable classification, allowing it to be shipped by air without special hazardous-material packaging. This certification reduces logistics cost and lead time for remote sites and multi-branch deployments. The three-year warranty on UPS and backup devices covers the unit through its expected four-to-seven-year service life.

How it compares

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

Price $104.99
Pricier than about 77% of the 3,915 comparable items (median $39.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I install this 12V 55Ah AGM battery and what is the common mistake to avoid?

Mount it in any orientation thanks to sealed non-spillable construction; the step people get wrong is over-tightening terminal bolts which can crack the ABS case.

What maintenance or replacement will this deep-cycle battery need during its 4-7 year expected life?

It is maintenance-free with 90% gas recombination so no water top-ups are required; plan a full replacement once capacity drops below usable levels after the design life.

What limit appears first when this battery runs under sustained discharge?

The 55Ah capacity rating defines the total energy available; voltage will sag once that ampere-hour reserve is depleted, ending usable output.

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