Over on the Ionic Industries YouTube Channel we have uploaded our latest battery replacement video. This one shows you how to replace the battery in the iO series of toothbrushes from Oral-B, including every iO model from the iO2 up to the iO10.
You can watch the new video below, or open the Oral-B iO series battery replacement video on YouTube.
The video is taken from our full photographic Oral-B iO Battery Replacement Guide.
HI, I fitted a replacement battery from you in my IO9 toothbrush in July. It has worked fine up until now.
It runs ok until it gets down to 38/40 % charge and then stops without warning and shows 0%
Hi Alan, there is a common fault with the iO toothbrushes where the internal battery-level meter gets out of sync with the battery. The toothbrush displays an incorrect percentage of charge which suddenly drops, then the toothbrush shuts off prematurely. One of the fixes is to fully charge the toothbrush, then remove the battery for 10 minutes. After reinstalling the battery the toothbrush should run correctly again.
Yes that all makes sense and is what I have experienced.
But for the price it is a disgrace and the items should be more reliable.
I am about to try to put in a new battery which I sent for – wish me luck!
The registration for guarantee is a performance in itself – a simple paper form to send off would be less trouble, as back in the day!
Type 3758
Thanks for posting this as has happened twice to me and this method resolved the problem.
Very informative web site 👍
My Oral B tooth brush type 3578 works as normal until it displays 38 % charge it still turns on at that point but next time I use it is dead.
Can you help?
Kind regards,
M
M Thomas, have you tried the fix described in our comment here?
Hi, thank you replying, as your response above I will try that and hopefully I will not need a replacement,
But if I do what is the cost of a new battery for this type 3578.
Many thanks for the advice, most companies would just sell a new battery.
Mike
Hi Mike, hope that fixes it for you. If you need one, the iO toothbrush batteries are available from us here.