To chip in a little bit, some chargers have LiFePO₄ chemistry settings which set ≈3.65V maximum voltage. This could serve as storage setting.
With regards to the low voltage/depleting the cells bad stuff thing, I cannot agree or cannot fully agree, though it depends in how low you do go. Once cut-off voltage is reached and the cell is no longer discharged its voltage ramps up back to well above 3V, generally. On the other hand I, for example, have a bunch of Samsung ICR18650-26C cells lying around in a plastic container, extracted from a quite old and high voltage abused laptop pack months ago. Some of them were slightly under 2V when I dismantled the pack. All of them tested 2150 - 2200+mAh (≈84.47% of rated capacity). And while I have not yet invested time for carefully observing their self discharge ratios what I can for sure say is this is pretty good if not amazing.
Take care if you do tests like the above one, and of course your mileage may vary.
Cheers
With regards to the low voltage/depleting the cells bad stuff thing, I cannot agree or cannot fully agree, though it depends in how low you do go. Once cut-off voltage is reached and the cell is no longer discharged its voltage ramps up back to well above 3V, generally. On the other hand I, for example, have a bunch of Samsung ICR18650-26C cells lying around in a plastic container, extracted from a quite old and high voltage abused laptop pack months ago. Some of them were slightly under 2V when I dismantled the pack. All of them tested 2150 - 2200+mAh (≈84.47% of rated capacity). And while I have not yet invested time for carefully observing their self discharge ratios what I can for sure say is this is pretty good if not amazing.
Take care if you do tests like the above one, and of course your mileage may vary.
Cheers
