Originally Posted by
Iride01
....... One even recommends keeping it were it will be between 32° and 68°F. That 68°F would be an issue for my garage in the summer! But that is only talking about when stored.....
There's a difference between optimal and required conditions. While cool but not frozen might be best, we know there's much more latitude because batteries are shipped globally in all seasons. They have to withstand sitting in a trailer in an Alberta winter, and/or a Dubai summer.
However the shelf discharge rate does vary with temperature, so cooler is better for long term storage, and they
MUST be stored with enough charge to not bleed to zero.