Battery 101


Replacement battery for Braun Oral-B toothbrush NiMH 1.2V 49x14 mm

These are Ni-MH 1.2V rechargeable replacement toothbrush battery compatible with Braun Oral-B and other brands, including specific versions of Braun Oral-B Vitality (Type 3708, 3709, and 3710) and Vitality Sonic (Type 3737) electric toothbrushes.

With pre-welded 3mm Nickel tags, 2200mAh capacity, and dimensions suitable for various lengths (48mm to 51mm), this battery offers a quick upgrade. 

Ensure compatibility by checking your toothbrush size before ordering. Not suitable for 3.7V, 3.6V, Li-ion, or Lithium-ion batteries; refer to other listings for those options.


  • Length: 49mm (suitable for replacing 48mm, 49mm, 50mm, and 51mm length batteries)
  • Diameter: 14mm
  • Voltage: 1.2V
  • Capacity: 2200mAh
  • Chemistry: NiMH
  • 3mm-wide tags at both ends for easy soldering

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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