Title: Battery compartment won't close
Product review: It does work well when you get it. I use it once a day (regular brushes the other times) because I worry about whether it's too harsh, but that's just my own thing which may have no basis in fact. Be aware that there are some replacement brush-heads that only have the top part spinning, and the bottom part doesn't move. I think those ones are not labeled "whitening."Anyway, after a few months I have trouble getting the battery cover closed all the way. When it comes too far open, the batteries lose contact and it shuts off. I've actually cracked the housing trying to get it closed. THe problem is getting worse and worse to the point where it's almost unusable now.
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