"a1esta" wrote in
ups.com:

Most manufacturers will state that the life of batteries in terms of
the number of charging and discharging cycles. I remember reading from
somewhere that rechargeable batteries has a shelf life even when the
batteries are not used.

For e.g., when the batteries are not being used, they will still be
"dead" say after 24 months or so. I also heard that for infreqently
used rechargeable batteries, it is necessary to store them at a very
low temperature (about 10 deg. C) in order to to prolong the shelf
life.

No,they don't like cold either.
Regardless of what you do,they have self-discharge.


I intend to buy a cordless screw driver mainly for use in driving
screws on cabinets, walls etc. And I will use it only about 3 to 4
times per year. And if the batteries really have shelf life, it would
not be econimcal. Would it be better to get the corded tool instead?

Thanks!



Or buy the newer,more costly lithium-ion battery models.
They will hold a charge for at least six months.

--
Jim Yanik
jyanik
at
kua.net