Long loading, short term

I've owned several Oral-B toothbrushes from Braun and was always satisfied. With the Pro Care 500 has something changed. The cleaning action seems to me to be good over the sectors interval timer can be divided.

But criticism is the term: the part will be charged for 18 hours (!) for that I can then use about 10-12 times for 2 minutes each toothbrush. That was with the older models definitely better (despite enormous advances in battery technology in recent years). Even for short trips I have to a battery-powered toothbrush Extra-trip purchase, if I do not want to give up comfort plaster, or still have a charging cable in the luggage.