Storage temperature 40% of the charge state of 100% state of charge

0 degree 98% (one year later) 94% (one year later)

25 degrees 96% (one year later) 80% (one year later)

40 degrees 85% (one year later) 65% (one year later)

60 degrees 75% (one year later) 60% (3 months later)

Obviously, if you want long-term store batteries, as far as possible on the dry and low temperature environment and allow the battery remaining capacity in 40% of ideal

Of course, you best to take the battery out every month to use them once, both to ensure the battery a good state of preservation, but also alienating the loss of damage to the battery power completely.