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

(5 customer reviews)


Replacement iO Series UR14500AC 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 local eBay links below for vendors who will deliver to your country.

Please note that as an eBay partner we may receive a small commission if you make a purchase through our links. This does not change the price you pay.

Battery Details

It is strongly advised that you open up your iO 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 see our other battery replacement guides for instructions on opening various other models of electric 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 Sanyo CH UR14500AC 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.

5 reviews 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

  2. jim (verified owner)

    I couldn’t be better served by your company. easy to navigate the purchase because you helped me identify the serial number of the toothbrush. Quite quick delivery. Detailed and clear instructions on how to remove the internal part of the brush to install the new battery. the battery was rather expensive but nothing compared to buying a new toothbrush, so happy on that score too.

  3. Kev (verified owner)

    I was very happy with the service that I received, when I ordered a replacement battery for my toothbrush. I was linked to this supplier from within the instructions to replace the battery. Both the instructions and the battery were spot on. The battery actually arrived a day ahead of the scheduled delivery date so even Royal Mail got their act together, in this instance.
    I cannot fault the service I have received and if anyone asks me for a recommendation for a replacement toothbrush battery, I shall be telling them about this site.

  4. Mick (verified owner)

    Hi, no problems at all w/ site straightforward, battery identical replacement arrived early.Turned out printed circuit was defective not the battery so ended up buying wife new brush 😭 good news I have a spare battery . Thanks for help and advice 👍

  5. Diane

    What a fantastic site. Your instructions are so detailed and helpful it gave me everything I needed to replace the battery in my IO6. Having obtained the battery from you – an exact replacement for the one I removed – the reassembly instructions were foolproof. The end result is my toothbrush is working again and I’ve saved a lot of money and waste materials. Thank you so much.

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