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Small rectangular Ni-MH battery pack 45.0 by 20.7 by 10.6 mm, 50.0 g, 2.4 V 650 mAh

Estry

Estry BK-T410 Ni-MH standard battery 2.4V 650mAh

SKU CH-WWHD-3H475 MPN BK-T410

A 2.4 V Ni-MH replacement pack rated at 650 mAh and 1.56 Wh, sized 45.0 × 20.7 × 10.6 mm and weighing 50.0 g, with over-charge, over-discharge.

  • Battery pack size1 Year
  • Details2.4
  • Direct replacement for BK-T410 devices
  • Ni-MH chemistry delivers 2.4V and 650mAh capacity
  • Built-in protection against overcharge, over-discharge, over-voltage and short circuit
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards
  • Compact 45.0 x 20.7 x 10.6 mm size weighs 50.0g

Replacement Ni-MH battery pack

This 2.4 V nickel-metal hydride pack replaces the original BK-T410 cell in compatible devices. It delivers 650 mAh capacity and 1.56 Wh energy rating. The pack measures 45.0 x 20.7 x 10.6 mm and weighs 50.0 g.

Suitable for direct replacement only

Users needing a drop-in spare for the BK-T410 model will find this pack matches the factory voltage and connector layout. It is not suited for devices requiring a different voltage, higher capacity or alternative chemistry. Buyers who want more runtime or a different form factor should look at other options.

2.4 V nominal voltage

The single specification that decides fit is the 2.4 V output; the device must be designed for this exact voltage. A mismatch will prevent operation or risk damage. Capacity of 650 mAh and the stated dimensions are secondary checks.

How it compares

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

Price $10.99
Typical for this category: the median of 10,440 items is $10.99.

Specifications

Product
Brand nameNi-MH
Model name650 mAh
In the box
Battery pack size1 Year

Questions about this item

How do I install the Estry BK-T410 Ni-MH battery and which orientation mistake should I avoid?

Match the 2.4V polarity markings on the 45.0 x 20.7 x 10.6 mm pack to the device terminals; reversing positive and negative is the common error that prevents charging.

What maintenance or replacement will the 650mAh Ni-MH pack need over time?

Expect gradual capacity loss after several hundred charge cycles; plan to replace the 1.56Wh pack when runtime drops below your needs, typically after one to two years of regular use.

What limit appears first during sustained high-drain use of this 2.4V 650mAh battery?

Internal protection triggers on over-current or excessive heat before the 1.56Wh energy reserve is fully depleted, cutting output to prevent damage.

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