Originally Posted by Vlodek9
If needed to leave for a year or so and did not have access to said batteries for that time, what is the best way to store them for that long period of time so that they would still be usable when I came back?
IMO, sell the used ones and store the new ones like you are doing presently. Chances are when adding a year to the used packs they may not perform to your expectations when you get back to flying. If any are weak now they will most likely be toast a year later.