We have installation with 3-phase setup with multiplus-II and RS 450/200 with three solar arrays connected with total Wp over 10kW. There is 280Ah battery with JK-BMS connected which the inverters are able to use just fine and it is visible on Venus OS. It is sunny outside and the system provides 31W of solar power. How can this be and what could be the possible reasons MPPT chargers do not charge batteries or provide energy to inverters? There is plenty of load as well to dump the energy to, but no…
Pls check your BMS settings. Pack full or absorbtion voltage is quite high. I recommedn 55.2V (3,45V/cell), not 56.8V.
Float voltage can be increased to 54,4V (3,4V/cell).
Andi Offgrid Garage on YT provide many information about BMS settings.
Pls select JK-BMS as battery monitor fix not auto.
You state using DESS.
Where are your loads connected? AC_out only?
Do you have a connected grid meter?
What is your SOC?
Are you importing/exporting energy while charging 31W?
Are you drawing energy from battery, while MPPT is limitied .
Do you permit exporting to grid?
What is your buy price vs sell pricse?