SteveD

In my case, I changed the settings to those recommended by Coulomb, bought a new battery and wrote it down to the cost of experience. When the time comes to replace my inverter, I will not use an Axpert again, this should not have happened.

Interesting. I have an Axpert 8kW connected to four PylonTech UP5000s. One of the batteries started to do the same thing ie not at 100% while the other batteries were all at 100%. When I took the suspect battery out, it was swollen. I took it to the supplier who pulled the log, there were multiple OverVoltage errors in the log so warranty repair was refused. The log file from the swollen battery is attached, for info. The concern is that the battery type is set to Pylontech, which in turn automatically sets: 02 Max charging current - 150A 26 Bulk charging voltage - 53.2V 27 Floating charging voltage - 53.2V 29 Low DC cutoff voltage - 45.0V and those appear to be within the Pylontech recommended ranges. So why were the batteries overchanged? Is this an Axpert issue? Event.txt

I remain confused, it has plenty of energy to supply the load. The issue is that the Axpert charges at the value in setting 11, maximum utility charging current regardless of load, until the battery is full. I want it to back off utility charging current if the load increases, so in my case: Kettle off: Generator provides 2.4kW, load is 500W (house) + 1.9kW (battery changing) Kettle on: Generator provides 2.4kW, load is 500W (house) + 1.2kW (kettle) so it should reduce the battery charging to 0.7kW

Hmm, I am not sure I agree that the inverter would trip, none of its outputs are anywhere near to a limit.

Hi, I have an Axpert Max II 8kW with 5.6kW of PV and 4xUP5000 Pylontech batteries. That keeps up going for most days but every now and then the sun don't shine and I need to connect the generator. I have just a 3.2kW generator because that was the most affordable inverter generator that I could find. It works fine in most cases, however I have to be very careful with total load when the generator is connected. There are settings for maximum utility charging current but is there a way that I can convince the Axpert to limit the maximum current drawn from the generator, regardless of whether it is used to supply load or to charge the batteries? For example, the house draws ~500W during the day, I derate the inverter 25% so I am happy drawing 0.75*3200W=2400W which is 50A into a 48V battery. So I set maximum utility charging current (setting 11) to 40A to give myself a bit of headroom. All works great until somebody turns on a kettle, at whcih time the generator is asked to deliver 40A*48V=1920W to charge the batteries plus 500W for the house plus 1.2kW for the kettle equals 3.6kW, so the generator trips. It would be convenient if the Axpert were to limit the maximum utility current rather than the maximum utility charging current, and reduce the charging current accordingly when the load goes up. Any ideas how I can achieve this? Thanks