If they're in "storage", they should be down around 3.6V. 4.0 is certainly better than 4.2, but probably still not ideal.I agree, Rossum. I have six batteries that I cycle through. My charge rate is "low" and they cool before and after a charge. I my "stocked up" drawer, I have six more all charged to around 4.0 give or take, checked every so often with a multimeter. I have used the same LG batteries for a long time, I have not noticed a degradation of performance. It takes a couple of days to cycle through three and start of the second three.
I am glad to have your thoughts on "age". I have periodically wondered about my "stocked up" drawer batteries. Should I get them all out and use them or not. I have elected not to use them more because I don't want to set up any method that assures they all get used on a regular basis (some might call that lazy, I say contemplative). But the multimeter check shows the discharge rate to be negligible. I had not thought of your idea that to use them all is to leave them all fully charged most of their lives. Makes sense to me.
I do have a pair of unused (except for one test cycle) cells that were put away fully charged and another pair that was put away at 3.6V. I'll check them again test cycle them again this summer to see if what how much difference it makes. In addition, there's two more pairs; one has been the fridge since last summer, and the last pair has been in the freezer (these were all at 3.6V). However, it may take more than one year to see big differences. That's OK, I've developed a good bit of patience as I've gotten older...
