Battery 101


Upgraded battery for Braun Oral B 8N, 9N, iO4, iO5, iO6, iO7, iO8, iO9, iO10

This is an upgraded rechargeable 3.7V Li-ion battery with 35% more capacity than the original battery and is an ideal replacement for Braun Oral-B electric toothbrushes Type 3753, Type 3758, Type 3776, and Type 3794 models.

Before making your purchase, kindly verify the compatibility of this battery with your toothbrush. Check the TYPE NUMBER and MODEL NUMBER on your Braun Oral-B toothbrush.

This battery is suitable for the following Braun Oral-B models:

  • Type 3753
  • Type 3758
  • Type 3776
  • Type 3794
  • iO4
  • iO5
  • iO6
  • iO7
  • iO8
  • iO9
  • iO10
  • 6N
  • 7N
  • 8N
  • 9N


NOTE: Please ensure that all battery terminals are clean and clear of water, rust, and oil, as these substances can disrupt connectivity and lead to charging problems.

If your toothbrush isn't powering up, accepting charge or holding charge, the issue is most likely due to poor contact between the battery terminals and the new battery. To fix this, take out the battery and carefully adjust the positive and negative terminals by prying out the terminals to ensure a secure connection with the battery (see image).

Key Specifications:

  • Battery Size: 49 length x 14mm diameter
  • Capacity: 1000mAh
  • Voltage: 3.7V
  • Rechargeable: Yes
  • Chrmistry: Li-Ion
  • End tabs: No tabs

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