I have a Victron 100/50 Smart solar controller driven by 840W of solar panels with a 24V house battery LiFePo4 that has inbuilt battery management. I cannot get the system to charge to maximum power or anything over 250W. Is there a way to set to Victron to simply supply a set voltage and deliver the max current without regulation etc?
The mppt will charge at the max (available) current until the absorption voltage is achieved. Then the mppt will reduce the current to hold the battery voltage at the absorp value.
Could also be array voltage being to close to the battery voltage. What are the specs of the panels?
Post a screenshot of the mppt's "detailed" history so ppl can see what the mppt has been recording.
You do need a control link from the BMS to the Charger, so the BMS can regulate the charge current at the top 20% of charging. Without this you won't get proper equalisation, and risk the BMS disconnecting on cell over-voltage as mentioned above. Problem with the built in BMS on the Fusion batteries is there is NO external communications - from what I see of the data sheets.
Hi sedged, I could not find such a setting in the VictronConnect App. Any tips on where to locate it?
A screen shot of some history. I a thinking the MPPT control is competing with the battery charge control. Is there a way to turn off the MPPT? The other alternative is that I play with the Float and Absorption voltage settings.
Any loads or other chargers in use?
What was the mppt state? Bulk/absorp/float?Post a screenshot of the mppt's battery settings.
Battery voltage is/was 27.5. The main AC mains charger is in float mode. There are loads that vary.
@AlanK there would appear to be some interaction between the mppt and mains charger.
On a nice sunny day switch of the mains charger and monitor how the mppt performs.
You could probably reduce the float voltage to 27.6v .
