Electric toothbrush average lifetime? Motor is slowing, speeding up, slowing. Battery or motor?
What kind of lifetime do these things typically have? Maybe the battery's lifetime (NiMH) was shortened by storing uncharged for a couple of years? Has anyone tried to open it up and replace the batteries? Probably not worth it in general, and I'll probably buy a replacement anyway, but I could probably re-purpose this unit for something else if I could get it fixed.