Initially, the toothbrush works well. But after about 3 years of battery is faulty. Den but you can not swap! A replacement DS handset is not possible, because in the meantime the charging station has been changed and the old SmartGuide would no longer work with a new handset.
Therefore means a defective battery: throw away, buy new.
For this, the toothbrush is too expensive. Ecological sense the approach is not also.
