Jim 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

Just get a mechanical twist timer. As you walk by once in a while, give it a
twist. The chargers will run for an hour or whatever you set it to, then turn
off. You can probably get one that will go up to 24 hours if you need.

You could use a sprinkler timer switching a relay to the power.