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Rectangular Ni-MH battery pack, dark plastic casing, labelled 7.2V 3500mAh

Estry

Estry FSH3 standard battery 7.2V 3500mAh 25.2Wh

SKU CH-HCN8-D7P6X MPN FSH3

Ni-MH replacement pack delivering 7.2V and 3500mAh for FSH3, FSH6, FSH-Z32, FSH3TV, FSH18, FSH626 and FSH323 models

  • Battery pack size1 Year
  • Details7.2
  • Replaces original FSH3, FSH6, FSH-Z32, FSH3TV, FSH18, FSH626, FSH323 packs
  • 2 V Ni-MH chemistry delivers 3500 mAh and 25.2 Wh capacity
  • Over-charge, over-discharge, over-voltage and short-circuit protection built in
  • Certified to ISO 9001, RoHS, CE, UN 38.3 and MSDS standards
  • Compact 134.82 × 33.9 × 31.6 mm design weighs 502.0 g

Replacement Battery for Survey Instruments

The Estry FSH3 is a nickel-metal-hydride pack built to match the original specifications for compatible survey and field devices. It delivers 7.2V and 3500mAh in a 134.82 x 33.9 x 31.6mm form factor weighing 502.0g. Integrated protection guards against overcharge, over-discharge, over-voltage and short circuits. Certifications include ISO9001, RoHS, CE, UN38.3 and MSDS.

Capacity and Runtime Headroom

The 25.2Wh rating supports extended field sessions for instruments such as the FSH3, FSH6, FSH-Z32, FSH3TV, FSH18, FSH626 and FSH323. Ni-MH chemistry provides steady voltage output until the pack nears depletion, then drops sharply — plan to swap or recharge before critical measurements. The 3000mAh reference spec indicates the baseline design target this unit exceeds.

Ni-MH Chemistry and Charging Limits

Nickel-metal-hydride cells require chargers terminated by voltage or temperature detection; trickle charging above the recommended rate shortens cycle life. The pack has no built-in fuel gauge, so remaining capacity must be estimated from device runtime or an external analyser. Self-discharge is higher than lithium alternatives — expect measurable loss after weeks in storage.

How it compares

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

Price $44.99
Pricier than about 90% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameNi-MH
Model name3,000 mAh
In the box
Battery pack size1 Year

Questions about this item

Will the 7.2V 3500mAh pack fit the battery compartment of my FSH3TV handset without modification?

The pack measures 134.82 x 33.9 x 31.6 mm and weighs 502.0 g, matching the original FSH3TV battery dimensions for a direct fit.

How can I confirm the replacement cell is delivering the rated 25.2 Wh after the first charge cycle?

A full charge should power the handset for the same talk and standby time as the original pack; a multimeter reading 7.2 V at rest confirms voltage integrity.

Does the box include a charging cradle or only the 3500mAh Ni-MH battery itself?

Only the battery pack is supplied; a compatible charger or cradle for the FSH3 series must be purchased separately.

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