Many marine and RV installations spend most of their time out of use (at the dock or parked), hooked up to shore power. Typically 1-3 weeks beween weekend usages during the early and late season and sometimes for the entire winter.
During these periods, it's practical to have DC power onboard for running internet, sensors, fridge, Cerbo etc. but the LiFePo4 batteries are essentially in storrage.
It would be beneficial for LiFePo4 battery longevity (also non-managed drop-ins) to set a temporary lower charge voltage to aim for storing the batteries at between 40% and 80% SOC rather than at 100%. This is better achieved through temporarily limiting the charge voltage, which will create a stable SOC situation rather than turning the virtual switch off and on, effectively doing many small charge cycles. Balancing of the cells would not happen in this period (as it would not happen in disconnected storage either). Using VEConfigure to do this is just too cumbersome.
You could choose to call this a "storage mode for LiFePo4."
To avoid users erroneously keeping this state while making active use of the installation, an alarm could be set for AC disconnects > 1hr and/or alternator-level DC voltage being monitored while in this state.
Finally, this setting could be controlled through Node-Red just like the current one for managed batteries, enabeling the advanced user to turn off the "storage mode" remotely in good time before going on a trip, enjoying a fully and freshly charged service bank when leaving.
(Please feel free to correct me if I have misunderstood something above. I'm aware that LiFePo4 batteries are a a great deal more robust than Li-Ion etc. and will only degrade moderately from being kept at a 100% SOC. Still - I think it's an unnecessary degradation.)
