There is a phenomenon in LFP which has been called a "memory effect".
T1 Terry has extensive hands-on experience with testing and preventing it, so below is pending his feedback and corrections as the authority on the phenomenon.
Bottom line, my understanding is, IF you are not at least occasionally
charging up past the usual "gentle termination" voltage of 3.45Vpc, then you should, bring it up right to the data sheet spec max say 3.6Vpc and hold Absorption stage there watching trailing
current drop to say 0.2C before stopping then discharge at least a bit.
Yes this is stressful but as a
maintenance routine say every 50 cycles not harmful.
An additional preventative is, if you are routinely
charging to another lower SoC% point, say 60% for
storage periods
do not keep using the same exact voltage setpoint, vary it regularly in a 10+% window, so say between 3.22Vpc and 3.28Vpc.
Hitting exactly the same precise SoC% point, over and over for many months (due to excessive reliance on automated controls) has a chemical effect that requires higher currents to get past that point
which can mistakenly be interpreted as a loss if capacity.
I do not think the same has been discovered within the other Lithium-Ion chemistries, LTO or the higher density li-ion ones at nominal 3.6-3.6V
That's torn it, the insurance market are bound to read that the wrong way 
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