This is the fourth of these that I have bought (2 new, 2 refurbs). On the new ones the lighter socket plugs melted. One (I'd given it to a relative) got thrown away, on the other I simply replaced the melted plug with battery clips. The refurbs are working well so far, perhaps the socket plugs are better quality. Other than that, these inflators work significantly better than any other portable inflator I've ever used, which is why I keep buying them .