One could argue your comments...
1) Lipo life is being proven to be longest when NOT discharged deeply. Look at the 1000's of small almost AA size 18650 cells used to power the Tesla car: studies showing folks who are not running down to much less than 50% charge are at 7-8 year life with like new batteries, and going strong well after that. From my lipo EV car experience, I disagree with your comment "discharge mostly." My 108 cells were like new for 4 years: I then decided to allow fast accelerations, 0-60mph in 7 seconds in a chevy equinox (250amp peaks upped to 450amps) and I harmed 4-5 cells in a few months time. I have had some extensive discussions with PHD Dr. designers of lipo cells, and all have agreed that small discharges will make them last almost forever.
2) Again, running lipos down to 11% is, in my experience and study, detrimental to longevity.
3) Keep i mind the 'discharge to 8%' dji suggestion had NOTHING AT ALL to do with lipo batteries or their life:
it was simply a method they used to re-calibrate their internal BMS (battery management system IC) so it read correctly - nothing at all to do with making the lipo last longer! It only shortened life but in P2 days was required to recalibrate the mah readings.
If one was willing to only fly from 100% down to 70% minimum, ones lipos probably would last for 10-15 years before significant degradation set in (600-800 cycles). But to most people that trade off is not worth it.
Some data to support my comments:
What's the life expectancy of a Tesla Model S battery, and will there be a replacement plan of some sort? - Quora
Let's see if a typical life curve based on how far you discharge shows up:
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