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Rectangular Ni-MH battery pack, grey plastic case, labelled 12.0V 1800mAh

Estry

Estry M1277A 12.0V 1800mAh standard battery

SKU CH-HQMM-G4YZJ MPN M1277A

Replacement 12.0V 1800mAh Ni-MH pack fits M1277A and listed compatible models with built-in protection circuits

  • Battery pack size1 Year
  • Details12
  • Replaces original battery across 11 compatible models
  • Delivers 1800 mAh capacity at 12.0 V for 21.6 Wh runtime
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection
  • Certified to ISO 9001, RoHS, CE, UN 38.3 and MSDS standards
  • Compact 143.0 × 62.0 × 21.0 mm design weighs 540.0 g

Replacement battery for legacy devices

This Estry Ni-MH pack replaces the original power source in a range of legacy equipment including the M1277A, CPK-855, CPJ-815 and VKR-2000 PRO 1. It matches the factory voltage and physical dimensions so the device fits and powers on without modification. Safety circuitry guards against over-charge, over-discharge, over-voltage and short circuits.

Voltage and chemistry match

The single specification that decides fit is the 12.0 V Ni-MH chemistry; any pack with a different voltage or lithium chemistry will not work in these units. This cell delivers exactly 12.0 V and carries the same connector layout as the original V80086BK01 and 40488A part numbers. Certifications include ISO9001, RoHS, CE, UN38.3 and MSDS.

Capacity and runtime envelope

Rated at 1800 mAh and 21.6 Wh, the pack powers typical workloads for several hours before needing a recharge. It comfortably handles intermittent use in portable scanners, medical monitors and industrial handsets where the original cells have aged. Runtime drops sharply under continuous high-current draw or in freezing temperatures, so users needing all-day operation should plan for a spare or external charger.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $45.99
Pricier than about 90% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameNi-MH
Model name1,800 mAh
In the box
Battery pack size1 Year

Questions about this item

What does the 12.0 V 1800 mAh rating mean for actual run time?

The pack stores 21.6 Wh; run time equals that energy divided by the device's average power draw, so a load of roughly 10 W would last about two hours.

What interface or connector standard does this pack use?

It replaces the original battery in the listed models such as M1277A, CPK-855 and VKR-2000 PRO 1, using the same proprietary connector and pin-out as those units.

What are the physical dimensions and weight for fitting or mounting?

The pack measures 143.0 x 62.0 x 21.0 mm and weighs 540.0 g, matching the original battery's form factor for direct installation.

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