:>:Regardless, I will make sure my next drill uses Nimh
:> I got the NiCads because the drill came cheaper that way. It's true that
:> NiMH will have greater capacity. They say that the modern NiCads don't
:> have the memory effect, but I don't know if that's categorically true.
:> However, something to consider is the fact that NiMH will self-discharge
:> at a significantly higher rate than NiCads. For me, that's a very
:> important factor because most of the energy drain on my cordless drill
:> batteries is from sitting around, not from use. I think I'll stick with
:> NiCads for that reason.
:Do NiMH short out or fail if self-discharged,like NiCds?
:If not,then they can be stored,then simply charged up before use,-without
:needing to buy new packs.
I think Lion rechargables isn't practical for me. To answer Jim's
question, I think that Lion's will fail, charged or discharged. The life
expectancy isn't really (AFAIK) more than 2 years. So, in that category,
NiCads and NiMHs have Lion truly beat. Lion's life expectancy can be
significantly increased by storing them refrigerated, preferrably around
40% charged. Not terribly practical for a cordless drill, but that's
what I do with my digicam batteries. Even so, I don't expect them to
last more than 3 years in my refrigerator... will see.
If the Lion's lasted more than a couple of years they would be a
possible option. Add to that the fact that they are pretty expensive (I
haven't priced them against the others but I imagine they are
significantly more expensive) and they are 3rd on the list of
rechargable drill batteries for me.