NiMH 42mm x 14mm Braun Toothbrush Battery

Rated 5.00 out of 5 based on 3 customer ratings
(3 customer reviews)


42mm x 14mm NiMH Tagged Electric Toothbrush Battery for Braun Oral-B Type 3756, 3754 and certain other toothbrushes.


This is a new replacement battery to fit certain Braun Oral-B, Philips Sonicare and other manufacturers’ electric toothbrushes.

It is fitted with solder tags ready for you to solder it into your toothbrush and give it a new lease of life.

It is recommended that you open your toothbrush first to double-check the measurements. See our battery replacement guides section for instructions on replacing your toothbrush battery.

  • Length: 42mm (suitable for replacing 41mm, 42mm, 43mm and 44mm long batteries)
  • Diameter: 14mm
  • Voltage: 1.2V
  • Capacity: 1400mAh
  • Chemistry: NiMH
  • Brand: ESP Batteries
  • Tagged at both ends for soldering

This battery is a replacement for most Braun Oral-B Professional Care and TriZone Type 3756 and 3754 toothbrush models along with some others, including some versions of the Type 4729 and some versions of the Type 3728.

See additional photo for polarity identification. Not suitable for replacing Li-ion batteries. The fitted solder tags will need trimming to fit your toothbrush.

3 reviews for NiMH 42mm x 14mm Braun Toothbrush Battery

  1. Rated 5 out of 5


    Brilliant, useful website, a great product, new life in toothbrush!

  2. Rated 5 out of 5

    ERNESTO (verified owner)

    Great idea and great service.

    I received batteries in a few days in Spain, I follow the detailed instructions for replacing them, and know my toothbrushes work like it they were a new ones.

    Thank you very much. Continue in this way!

    • Ionic Admin

      Ionic Admin

      Thanks for your comments Ernesto!

  3. Rated 5 out of 5


    I was about to toss my toothbrush when I came across Ionic! I never could have done the installation without the very clear illustrated directions. It took me about 30 minutes to remove and replace the battery. The battery arrived here (California) faster than many things shipped from within the US.

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