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The iO, released in 2020 is an electric toothbrush by Oral-B. It is able to connect to your smartphone via Bluetooth and gives you realtime 3D teeth tracking. Model: Oral-B iO 9

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Why it doesn't charge properly?

It seems to be charged. It syncs, and it shows on the app to be fully charged. Then it stops working and back to 0

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@mercegalle60134 it's entirely possible that this is a bad battery. It may charge but does not hold a charge. I would start with a replacement. Here is a guide for that Oral-B iO Battery Replacement

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Merce Gallego Galindo will be eternally grateful.
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