I talked to another lithium battery 'expert' and was told that storage time was not very important, rather the number of times you recharge or top off the battery. It is better to run the battery nearly but not completely down than to repeatedly charge a partially charged battery. So if you use it only once in a while, it will last quite a long time. But if you put it on the charger every time you come in, this will cause the battery to loose its capacity in a fairly short time.
I thought that only NiCad batteries had such a 'memory problem'. If you repeatedly recharge a partially charged NiCad battery, the battery no longer has the full capacity. For Lithium batteries it's the number of times that it is recharged, not, how full the battery is, when you recharge.
I'd check that. I'm certainly no battery expert, but I've read in more than place lately, that lithium batteries should
be kept charged and should only be nearly discharged occasionally. http://www.techrepublic.com/blog/five-a ... y-life/289
"Experts are people who avoid all the minor pitfalls on their way to the grand fallacy."