Good afternoon all,
This is the first time I am using the pylontech UP5000 batteries and I cant get them to charge above 86%, or more specifically 51.53V. The system is a Cerbo, a Quattro, and the pylontech batteries.
This is not my first time setting up a Victron with the Pylontech batteries, and I thought it was pretty straightforward up until now.
I have been through https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom
and all of my settings are exactly as they state here, with the exception of the DVCC.
It looks like the items on the Live page are outdated as the DVCC is now forced on. SVS is forced off, STS is forced off. (I have checked past installations and I see this is now true on all my installations)
In addition to the above the following settings are set:
Limit charge current: Off
Limit managed battery charge voltage: off
SCS : off.
I also have confirmed the battery and the Cerbo are communicating with the parameters coming through as expected. The BMS CAN is set up correctly and I have no errors.
Additionally, I see that the cell data is now available. I don't know if this is just a Cerbo thing or a UP5000 thing. But I think it's cool.
When I first charged the battery it charged to 100%, which was at 51.53V. Over time that 100% has dropped to 86%.
What I suspect is that overtime the cells have balanced, which causes the 51.53V to equal a lower SOC. This is just my opinion and could be incorrect.
I dont know if anyone has any ideas on what I can do differently, or if I am missing anything. as at this point, I don't know how to get it to charge to 100%.