Very poor battery performance

Shortly beforehand: I've been using for ages the rotary toothbrushes from Oral-B and I am from cleaning result and pleasant handling over many years and across different devices have always been satisfied.

However, what bothers you about this device is on the one hand the tedious off and very poor battery performance.
If the battery is empty, it indicates the toothbrush. After that you can often no longer brush their teeth at the end. And this not even after 1 year use !!

At my last Oral-B this problem occurred after 4 or 5 years. That is then also fine.