On Mon, 19 Feb 2018 10:45:21 -0800, Jeff Liebermann
wrote:

On Mon, 19 Feb 2018 09:25:30 -0800 (PST), KenO
wrote:

Agree have never had problems with either NiCd or NiMH.

I beg to differ. I have had NiCd and NiMH cells leak. The difference
is that unlike alkaline, they don't leak in the package:
http://www.learnbydestroying.com/jeffl/crud/Kirkland-AAA-leak.jpg
I've found from dealing with commercial walkie-talkie batteries, that
if I leave the packs totally discharged for more than a few weeks, the
batteries will leak. The good news is that this rarely happens.

I have also had some NiCd batteries leak. But that was after years of
non-use. In fact I had some brand new ones (still in their package),
that got misplaced and years later I found them and they were corroded
inside the package. The corrtosion was confined to the package so
nothing aside from the batteries was damaged, and I just tossed them in
the trash.

QUESTION: What are those coin cells? (like the ones used in computers
for the system clock). Has anyone ever seen them leak? I ask because I
have several old computers that have been sitting around un-used for
years, and I never removed them cells.