Battery 101


Replacement battery for Braun Oral B 42x14mm 1.2V Type 3756 3754 toothbrush

These rechargeable NiMH batteries boast a high capacity of 1200mAh and a voltage of 1.2V, making them ideal replacements for specific Braun Oral-B toothbrush models, as well as those from other manufacturers. Notably, they are compatible with various Braun Oral-B Type 3754 and 3756 models.

Please note some older models are installed with different battery sizes and may have offset tabs which render this battery NOT a suitable replacement.

To ensure compatibility please open up your device and verify the size, voltage, and positioning of the Nickel tabs before placing an order.


Key Specifications:

  • Length: 42mm (compatible with batteries measuring 41mm, 42mm, 43mm, and 44mm in length)
  • Diameter: 14mm
  • Voltage: 1.2V
  • Capacity: 1200mAh
  • Chemistry: NiMH
  • Equipped with solder tags at both ends for easy installation

Please fully charge battery before use. 

These are not an appropriate substitute for batteries labelled 3.6V, 3.7V, Li-ion or Lithium-ion. Please use our search bar should you require this type of Chemistry.

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