J. Clarke wrote:
John McFerren wrote:

Ralph Mowery wrote:
"Stormin Mormon" wrote in message
...
I find nicads in drills last about two years. You got your use out of
them.


Usually nicads are rated in how many charge cycles they can take. Around
300 to 600 cycles. I think that a partical charge is also a partical
cycle
but not sure. Some rechargables are just rated in number of years even
if they are not used very often.


True, LiOn Cells will only have a useful life of about two years, after
that they should be replaced, the same is true for LiPo batteries.

I keep hearing this. My real world experience is otherwise.

I'm currently tracking an exception to the rule right now. A friend of
mine was given a laptop that was "broken" for three years. I tightened
a screw on the video card and it works fine. The battery of course was
not replaced within those three years and the battery life is longer
than the 30 minutes that I expected (more like 2 hrs but never fully
tested).