"Joseph Meehan" wrote in
:

a1esta wrote:
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.

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!

Battery technology keeps changing. My experience tells me that
current
batteries are good for maybe 3-8 years total time if treated well.

In your case I would suggest making a plan to recharge them on a
schedule maybe every two or three months. Letting them totally
discharge is not good.



My first Makita 9.6V stick lasted 10 years when used daily,6095DW
drill,light usage,but daily,charged when drill speed began to drop.The next
stick only lasted a couple of years because it got very infrequent use.

--
Jim Yanik
jyanik
at
kua.net