I have 2 Hollandia carbon batteries HP 12-200CA connected as 24v, during the day i have about 1100 watts from PV and the load is about 600 watts but since the Victron 150/60 MPPT goes into bulk early morning when the PV watts still low it does not seems to go full charge even with zero load on inverter for couple of days the batteries SOC still below 30%. My smartshunt and MPPT battery setting attached below
Your BMV settings need a tune up.
Its a smart shunt, but does the MPPT take the data from the shunt and do the charging or take its own settings? And for my battery at what voltage i should consider it fully charge and manually sync it to 100% SOC?
BMV = Smart Shunt, same settings would apply.
Your mppt history is recorded from mppt data for the past 30 days.
Especially useful data regarding the charge state (bulk/absorp/float), PV data- max watts/volts and yeild, as well as the batteries min/max voltage for the day, that the battery has achieved each day.
Do you see a current flow into the battery if the MPPT is charging with no load?
My guess is that the negative of MPPT is connected to the wrong side of the BMV shunt.
btw. the "charged voltage" setting is higher than the absorption voltage of the MPPT, it should be lower.
https://www.youtube.com/watch?v=MRljOaTdc3s
Do you see a current flow into the battery if the MPPT is charging with no load? Yes and at times i have seen as high as 400 watts
My guess is that the negative of MPPT is connected to the wrong side of the BMV shunt. Its correctly connected, there is some writings on the smartshunt to state which side goes to battery and which goes to load
btw. the "charged voltage" setting is higher than the absorption voltage of the MPPT, it should be lower. You are right, i have increased it recently to see if it can help i will lower it back, actually i think the equalizing voltage is high but could not find the right setting for my battery
