49mm x 14mm Li-ion Oral-B iO Series Toothbrush Battery

(1 customer review)


49mm x 14mm Li-ion Replacement Toothbrush Battery for Braun Oral-B i04, i05, i06, i07, i08, i09 and i010 toothbrushes.


This is a top quality Sanyo Lithium-ion replacement toothbrush battery to fit the Braun Oral-B iO series of toothbrushes that take Lithium-ion (Li-ion) rechargeable batteries, including the iO4, iO5, iO6, iO7, iO8, iO9 and iO10 models.

Note: This product can only be delivered within the UK due to courier restrictions on Li-ion batteries. For international delivery outside the UK please see the links below for vendors who will deliver to your country:

It is strongly advised that you open up your toothbrush before ordering to double-check the measurements as some models are fitted with different types, lengths and diameters of battery. To help you we have published a guide how to open up the iO series toothbrushes and replace the battery here. For other models also see our battery replacement guides section for instructions on opening other models of toothbrush.

  • Length: 49mm (suitable for replacing 48mm, 49mm, 50mm and 51mm long batteries)
  • Diameter: 14mm
  • Voltage: 3.7V
  • Typical Capacity: 740mAh
  • Chemistry: Li-ion
  • Brand: Sanyo
  • Replaces original Sony, Sanyo and Highpower Li-ion batteries
  • Flat contact at both ends – observe correct polarity!

This battery is compatible with the Braun Oral-B iO series of toothbrushes, including the iO4, iO5, iO6, iO7, iO8, iO9, iO10, 6N, 7N, 8N and 9N models which have type numbers 3753, 3758, 3776 or 3794 marked on the bottom of the handle. It must be inserted with the same polarity (+/-) as the original battery. It is suggested that you photograph your original battery in-situ before removing it.

This battery is suitable for replacing various original Braun Oral-B Lithium-ion batteries of the same dimensions including ones with some of the following markings, and others:

Li-ion cylindrical cell batteries marked:

Li-ion 00
Li-ion 10
Li-ion 20
Type 3753
Type 3758
Type 3776
Type 3794
US14500VR R2

Not suitable for replacing NiCd (Ni-Cd/NiCad) or NiMH (Ni-MH) type batteries. See our other products if your toothbrush has one of these batteries fitted.

1 review for 49mm x 14mm Li-ion Oral-B iO Series Toothbrush Battery

  1. Callum O’Connor (verified owner)

    I recently purchased a replacement battery for my Oral-B iO toothbrush from this website, and I couldn’t be more pleased with my experience. The website was easy to navigate, and the ordering process was simple and straightforward. The battery arrived quickly and was exactly what I needed to get my toothbrush up and running again.

    Not only was the product high-quality, but the customer service was exceptional as well. I had a question about the installation process, and the customer service team was incredibly helpful and friendly, providing me with clear instructions and making sure that I had everything I needed to successfully replace the battery.

    Overall, I highly recommend this website for anyone in need of replacement parts for their Oral-B iO toothbrush. The quality of the product and the level of customer service are both top-notch, and I will definitely be a repeat customer in the future. Thank you for such a positive experience

Add a review
Any comments containing links are automatically deleted. Your email address will not be published.

You may also like…