On Fri, 25 Mar 2016 10:44:01 +0000, Raymond
wrote:

replying to Jan Philips, Raymond wrote:
I've had the same problem. Totally ruined my Maglite D cell flashlight and
the AA cells leaked in two of my Fenix LED flashlights. I managed to save
them at least. Just threw all my remaining RayOVac batteries in the trash and
picked up some Duracells.
Strange thing is the only "brand name" battery I have had leak at all
in the last 10 years was a "coppertop". Just a wee bit of green/white
fuzz on both ends. No swelling - and easily cleaned up.

The secret, I guess, is to NEVER leave batteries in anything
un-attended for any lenth of time.
I also had a set of off-brand original equipment batteries in a TV
remote leak. The TV is 4 years old and one day the remote (used daily)
just stopped working. I pulled the batteries and they were both
leaking (again- just a bit of green/white fuzz on both ends)
Both sets of leakers were aaa size.

I've also had a couple of coin batteries "leak" the same way. All have
been at least 3 years old.