After 23 hours of charging, I was about to return the toothbrush because I suspected a faulty battery. But when an hour later the charging lamp finally went out, I decided to keep the toothbrush. My two year old daughter refuses daily with loud protest and tears, to brush your teeth. Since we use this electric children's toothbrush, they even would be on cleaning and performs the toothbrush even yourself. The brushing with the electric toothbrush is easier for me, because it is easier to approach comes with the small round brush head to the posterior region. The pity is that the melodies are hard to hear, because the engine noise of the toothbrush nearly drowned out the songs.