Is there a chance the VRM could compute and show the "effective cycle count" of a battery in a shown timeframe - and/or total? Seeing this raw SoC is nice and informative, but in order to estimate % Lifetime left, there are some crucial infos missing.
A moving average SoC for the past 30/90/... days would also be helpful.
So showing something like:
300 Full Cycles eff.
85% SoC avg
would be helpful to observe aging of batteries at the monitored site.