The new lithium batteries will last for a long time. I have a couple I've used in my RC airplanes that are 7 years old. If you aren't going to use them for a while, discharge them to below full charge and just let them sit. Doesn't hurt them at all. And they maintain that charge for over a year.
They do not like to be cold and just sitting. If in the cold let them power something and they'll warm up to operating temp.
They do not like to be cold and just sitting. If in the cold let them power something and they'll warm up to operating temp.