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.


--
Joseph Meehan

Dia 's Muire duit