ransley wrote:
On May 25, 12:33 pm, "Jim" nospam@wherever wrote:
Hello... I am storing a few rechargable whipper snipper batteries in my
garden shed along with other assorted batteries. I want to time my charger
to give them a charge say 1 day every two months or maybe one day a month. I
know if I go out to the shed and just plug the battery charger in I'll
freaking forget about them and they'll charge for a freaking week before I
remember. (I'm 51 and my mind is toast...70"s were real good to me lol)
Anyways...I googled "monthly timer" etc and found nothing that would
help... is there a 110 volt timer that will do something like this? If you
run across this would you mind posting a link? Thanks folks.. Jim

What is the point, just charge before use. To determine if your
charger overcharges or is a smart peak charger a use a volt meter to
measure voltage and check the temperature of the pack. A Nicad 1.2v
cell should stop charging at about 1.3-1.38 v per cell, then the
charger should shut off if its voltage peak, Temp peak charging would
be several degrees above room temp, if pack stays hot or continues to
receive charge then its not a very good charger. My old B&D chargers
were not good. Best is just charge before use there is not need to
maintain 100% charge all the time, those that say leave in the charger
like B&D just cook batteries slowly to death without very good peaking
monitoring. My way of thinking is if the pack is hot its not good for
the batteries.

I like that. It helps to charge a lead battery every month or so, but
nickel batteries don't seem to deteriorate from sitting uncharged.

Part of the plate material can dry if a nickel battery sits for months,
so it may not have much capacity on the next charge. Each recharge
should help moisten the plates and improve performance.