Review (3/5): The best toothbrush ever, but wears out completely in 2-3 years.
Excellent cleaning of our teeth, great results when we get checkups and keeps our teeth feeling great. It would get 5 stars except you must replace them about every 2-3 years, they just slow down and poop out(have had 3 or 4 of them). I do run the battery down occasionally, like the instructions recommend to keep the battery memory effect down. From the manual "To maintain the maximum capacity of the rechargeable battery,unplug the charging unit and fully discharge the handle with regular use at least every 6 months" Your Iphone does not recommend this. If OralB (Braun) wanted to they could use a cell phone type of battery, ie lithium, and the lifespan and power would be MUCH better, but no its just an old tech nimh-hi (says so on the unit). So great brush but meant to wear out pretty quickly. Also the replacement brushes are very pricey, they have to be about 5 to 7 dollars each.