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Cylindrical D-cell sealed lead-acid battery with F1 quick-disconnect tabs

BatteryJack inc.

BatteryJack inc. Hawker Cyclon 2.5Ah 2V standard battery

SKU CH-C1Z8-V0VJD

2V 2.5Ah sealed lead-acid D-cell with F1 quick-disconnect tabs, compatible with ADI, GE, Dual Lite and other listed devices

  • Sealed lead-acid chemistry provides reliable standby power
  • 5 Ah capacity supports extended runtime in alarm panels
  • 2 V nominal voltage matches original equipment specifications
  • F1 quick-disconnect tabs enable tool-free installation
  • Direct replacement for Enersys 0810-0004 and compatible part numbers

Replacement Cyclon D cell

The Hawker Cyclon 0810-0004 is a sealed lead-acid D cell delivering 2 volts and 2.5 Ah capacity. It serves as a direct replacement for backup power in alarm panels, emergency lighting and industrial control systems. The F1 quick-disconnect tabs allow tool-free connection to existing wiring harnesses. Buyers needing higher voltage or different chemistry should look elsewhere.

Single-unit pack with two-year warranty

The product ships as one battery covered by a manufacturer two-year warranty. No chargers, cables or mounting hardware are included in the package. The warranty covers defects in materials and workmanship under normal float-service conditions. Installers must source any required terminal adapters or series-wiring components separately.

Simple drop-in installation

Installation consists of removing the old cell and sliding the new unit into the same holder, then pressing the F1 tabs onto the mating connectors. Polarity is marked on the case to avoid reversed connections. The most common issue is oxidised tabs on legacy boards, which should be cleaned before fitting the replacement. No firmware updates or configuration changes are required.

Highlights

  • Sealed lead-acid chemistry provides reliable standby power
  • 5 Ah capacity supports extended runtime in alarm panels
  • 2 V nominal voltage matches original equipment specifications
  • F1 quick-disconnect tabs enable tool-free installation
  • Direct replacement for Enersys 0810-0004 and compatible part numbers

Specifications

No published specifications for this item yet.

Questions about this item

How often will the 2.5 Ah sealed lead-acid cell need replacement in standby service?

The cell is built for float standby use; typical service life is several years before capacity drops below useful levels, at which point the whole pack is swapped.

What capacity limit appears first when the 2 V cell is discharged continuously at high current?

At the rated 2.5 Ah the voltage falls toward the end-of-discharge point, so usable capacity becomes the limiting factor before thermal limits are reached.

Does the F1 quick-disconnect terminal or the sealed case generate noticeable heat or noise during all-day float charging?

The sealed lead-acid chemistry and F1 tabs run silently and stay near ambient temperature during continuous float operation.

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