I have a victron 48V bank (4x200Ah smart), bms, smartshunt, cerbo, BlueSolar Charger MPPT 150/45, batteryprotect, li-charge and multiplusII (yes, all in on victron stuff :) )
Goal is to have it autonomous as much as possible.
Currently when charging, the systems always tries to charge to 100% where the bms is shutting down multiplus and the li-charge relay where the solarcharger is connected. As I don't want the batteries to sit at 100% for long (which they then will do during summer months when we have plenty of sun) in order to keep battery lifetime as good as possible, I'd like to define a upper limit like 75% SoC perhaps. The system should then try to charge to 75% and at that level only add energy (via solarcharger and/or multiplus) as needed in case of load to keep it at 75%. And yes, I would need to now and then charge up to 100% so the SoC measure isn't drifting off. The manuals suggests once per month so can be a manual thing todo, perhaps with some notifier via VRM...
Similar for the lower limit... instead of bms shutting down load at battery protection level, would be nice with a definable lower level like 35% SoC. Have not so much experience of this part of the energy envelope as the system so far coped good with load :)
This would also allow one to test and make sure the protection mechanisms will work, without having to actually be at the edge of safe SoC range.
Haven't found howto do this, or should it be possible?
If no, perhaps add as a enhancement request?
