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Cylindrical Ni-MH rechargeable battery with silver metal finish and green label showing 2500mAh 1.2V

Estry

Estry 2500mAh 1.2V Ni-MH Battery 3738 3731

SKU CH-65Z5-RDM3H

Ni-MH replacement cell delivers 1.2 V and 2500 mAh for Braun Professional Care and Triumph toothbrush models including 3738 and 3731 part numbers

  • Battery pack size1 Year
  • Details1.2
  • Fits Professional Care and Triumph toothbrushes
  • 2500mAh capacity extends usage between charges
  • 2V Ni-MH chemistry matches original specs
  • Safety protections prevent overcharge and short circuits
  • Compact 49.8 x 17.3 x 17.3mm design installs easily

Compatible Toothbrush Models

This Estry Ni-MH battery replaces the original power cell in Braun Professional Care and Triumph toothbrushes. It fits models including the Professional Care 8000, 8300, 8500, 9500 and Triumph 5000, 9000, 9400, 9900. The pack matches part numbers 3738 and 3731 for a direct swap.

Physical Fit And Electrical Match

The cylindrical cell measures 49.8 by 17.3 by 17.3 millimetres and weighs 62.0 grams. It delivers 1.2 volts and 2500 milliampere-hours for a 3.0 watt-hour rating. Built-in protection guards against overcharge, over-discharge, over-voltage and short circuits.

Sustained Daily Cycling

The chemistry is rated for one year of regular charge and discharge cycles in a sealed handle. ISO9001, RoHS, CE, UN38.3 and MSDS certifications confirm consistent manufacturing quality. Buyers needing a higher capacity than 2500mAh or a different voltage should verify their device specifications first.

How it compares

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

Price $12.99
Pricier than about 60% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameNi-MH
Model name2,500 mAh
In the box
Battery pack size1 Year

Questions about this item

How long will the 2500mAh capacity last before the voltage drops under continuous brushing?

The 1.2V Ni-MH cell delivers 2500mAh, so run-time depends on the brush motor draw; expect the voltage to sag once the stored 3.0Wh is depleted.

Does the pack get hot or noisy during all-day charging cycles?

Ni-MH chemistry runs silently and the 62.0g cell stays near room temperature during normal charge; no fan or moving parts are present.

Which toothbrush models accept the 3738 and 3731 part numbers?

Compatible handles include Professional Care 8000, 8300, 8500, 9500 and Triumph 5000, 9000, 9400, 9900 series.

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