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Small rectangular Ni-MH battery pack with two terminals

Estry

Estry FF1725 3.6V 600mAh Ni-MH standard battery

SKU CH-42GA-GJX2T MPN FF1725

3.6 V 600 mAh Ni-MH replacement battery compatible with Southwestern Bell models including FF1725, FF688 and FF1722

  • Specifications3.6
  • Battery Pack1 Year
  • 6V 600mAh Ni-MH chemistry powers compatible Southwestern Bell handsets
  • Replaces original FF1725 and 20-plus other model numbers for drop-in fit
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection extends service life
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS for safety compliance
  • Compact 42.45 x 29.77 x 14.37 mm pack weighs 87.7 g for easy installation

Direct Replacement Battery

The Estry FF1725 is a 3.6V 600mAh nickel-metal hydride pack built to match the original specifications for Southwestern Bell cordless phones. It fits the listed handset models without modification and carries ISO9001, RoHS, CE, UN38.3 and MSDS certifications.

Voltage and Capacity Match

The single specification that decides fit is the 3.6 volt 600mAh rating, which equals 2.16 watt-hours and matches the OEM pack used in models such as FF1725, FF688 and FF1722. Using a pack with a different voltage or capacity will prevent the phone from charging or holding a call.

Steady Talk-Time Delivery

Nickel-metal hydride chemistry delivers a stable voltage plateau during a conversation, so talk time remains consistent from the first minute to the last rather than dropping sharply as the pack empties. The integrated protection circuit guards against overcharge, over-discharge, over-voltage and short circuits to maintain that steady output over many cycles.

Highlights

  • 6V 600mAh Ni-MH chemistry powers compatible Southwestern Bell handsets
  • Replaces original FF1725 and 20-plus other model numbers for drop-in fit
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection extends service life
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS for safety compliance
  • Compact 42.45 x 29.77 x 14.37 mm pack weighs 87.7 g for easy installation

Specifications

BrandNi-MH
Model600mAh
Specifications3.6
Battery Pack1 Year

Questions about this item

How long will the 600mAh capacity last in a cordless phone handset?

The 600mAh rating at 3.6V delivers 2.16Wh, which typically provides several hours of talk time and days of standby on compatible Southwestern Bell handsets.

What connector standard does this Ni-MH pack use to fit the listed models?

It matches the original Southwestern Bell plug and pin layout used across the FF1725, FF688, FF1722 and other listed part numbers.

Will the 42.45 x 29.77 x 14.37mm dimensions fit my phone battery compartment?

The pack measures 42.45mm long, 29.77mm wide and 14.37mm thick, matching the original battery cavity for all compatible models.

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