Since there is still the cheapest (outdated) batteries are installed, the failure after 2 years is quite safe. In addition, the charging takes about 24 hours !!! With a current li-ion battery that would be a good device and could be recharged in 2-3 hours. Mitlerweile I have to assume that this is of brown / OralB so willed. The company is apparently Beratungsresistent and will primarily maximize profit, short-sighted ...
