FAQ – Frequently Asked Questions

Please find below answers to some of the frequently asked questions we get about electric toothbrushes, their batteries and toothbrush chargers.

Can I replace the battery in my Braun Oral B toothbrush?

Yes, the battery in your electric toothbrush can be replaced. Depending on the model, the battery replacement process involves different steps. The first hurdle is getting the toothbrush handle open and there are a few tricks to doing this which we explain. Once the toothbrush has been opened up the old battery can be removed and replaced with a new rechargeable battery. We have photographic guides to battery replacement for most Braun Oral B and Philips Sonicare toothbrushes in the battery replacement section of our website here.

What kind of batteries do Braun Oral B toothbrushes use?

Most Braun Oral B toothbrushes use rechargeable batteries that are soldered into place. Different models take different sizes, capacities and chemistries of rechargeable battery. From the older Ni-Cd technology, the most popular Ni-MH type, right up to the latest Li-ion chemistry we supply all the replacement toothbrush batteries available. Take a look at the range in our store here.

How do I remove and change the battery in my Braun Oral B Toothbrush?

As mentioned above, to remove the battery from your electric toothbrush it is best to follow one of our photographic guides. Different models of toothbrush can be opened in different ways, and they are fitted with various sizes of battery. You can see our full collection of battery removal guides on our dedicated web page here.

How long do electric toothbrush batteries last?

Assuming that just one person is using the electric toothbrush and you are following the recommend practice of brushing twice a day for 2 minutes at a time, most Braun Oral B and Philips Sonicare toothbrushes will run for 1-2 weeks before needing to be recharged again. For hints and tips on how best to look after your electric toothbrush and to maximise its lifespan take a look at our electric toothbrush care guide here.

If you have any further questions about electric toothbrushes please ask below!

8 thoughts on “FAQ – Frequently Asked Questions

  1. On my Oral-B toothbrush, a gunk forms on the charging plate under the unit itself. What is this stuff.

  2. I’d like to know what that is also.

    1. Are you referring to old watery toothpaste that has run down from the brush head and gathered at the bottom of the handle when on charge? Always remove the head from your toothbrush after each use to rinse it. Let it dry separately from the handle.

  3. There is water inside my Philips toothbrush, I want to try to replace my battery, it has a problem, I need a hx992 battery, where can I buy it

    1. The water has possibly damaged the circuitry so check for corrosion on the circuit board before fitting a new battery. The batteries for your Sonicare DiamondClean Smart toothbrush are available here.

  4. After a bit of stupidity, ordering the wrong battery, which was swiftly and helpfully resolved by Rob I have fitted a new battery to our Braun toothbrush.
    The instructions are first rate and easy to follow.
    I have just one small suggestion – when you’ve fitted the new battery and before you put the case back together try charging the new battery in ‘skeleton’ mode…. I had to disassemble mine again when it didn’t charge… I found a dry joint on the charging coil attachment and all is now well !

  5. Hi my Oral B io6 toothbrush ( type 3753) has stopped holding any charge. It displays 100% battery but dies after 1 minute of use.

    Please could you advise me to which battery to purchase and how to go about installing the battery for this certain toothbrush.
    Thank you!

    1. Hi Morgan, batteries for the Oral-B iO tootbrushes such as your iO6 are available from us on our Oral-B iO toothbrush battery page. After removing the metal ring from around the top of the iO toothbrush you can use the charging base to unlock the bottom of the handle then slide the innards out.

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