Worst of all previous battery Oral-B!

I have bought from the Professional Care 1000 Limited Design the black version on 12/10/2013. Unfortunately, this is no longer available, so I can submit a review only here without specifying Verified.
I am extremely disappointed by Brown. I use since more than 12 years, electric toothbrushes from Braun, but none were as badly as this. The battery lasts now only 3 days at a daily two-time usage (before 7 days). This is absolutely unacceptable!
My girlfriend used for about 2 years the Phillips Sonicare sonic toothbrush, where the battery will last about 2 weeks. Of this I can only dream of! Nope not me, now it's probably time to change the manufacturer! 2 stars only that the toothbrush usually has good cleaning properties.