Thanks for the heads up on the Duracell/Energizer seal quality. I'm about to replace every battery in the house.

How long have you kept Rayovacs? I've had a number of failures recently in batteries with a 2011-2012 date on them. They are AAs about six years old or newer. It seems to be worse in MiniMAGs than other lights. Recently installed & little use & they've swollen to the point it's not worth the trouble to get them out.