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I figured out how to charge my battery, when using the generator input, the important figure is the Generator Charge Start Battery SOC(%), set this to 90%, otherwise the charge current is very small (+-50W). Make sure your Max. Generator Input power(W) is correct for your Gen (mine is 3800W). I set the Generator Charge Battery Current(A) to 12A on mine. This then runs the Load and charges the battery at 600W. The Grid is down in this scenario.

Thanks for your prompt response, On my Luxpower SNA5000, I have 2 unequal strings: On 1 MPPT, 7 x JA460W panels (3220W), on the other 6 x JA550W panels (3300W) These MPPT's work funny on my machine, If the load power is low, it can switch off one MPPT completely and just be supplied by the other. This morning we were drawing about 500W and I noticed everything was being drawn from MPPT1, nothing from MPPT2 so I got worried and switched off the PV to MPPT1. It then (after a while) switched everything to MPPT2. I then put a kettle on and noticed it was sharing between MPPT1 & 2, so it isn't faulty, just strange. Any idea why it would act like this?

My SNA5000 inverter is fairly new, I bought it in Jan 2023, it has red color switches however, it adopts the new pin config. ie. pin 4 and 5 to pin 4 and 5 as in your new batch of inverters? Another thing, I see in your equipment list, you have 18 panels installed (I take it 9 on one MPPT and 9 on the other) therefore 9x50=450V OCV, in winter when the panels are colder, they can increase in voltage by 10V per panel = 540V which would be over the spec for that inverter?

I was having this same problem when I installed my SNA5000 inverter, it would blow the fuse on my Logitech Z5500 surround sound system, solved it by upping the UPS voltage setting to 230V, it was set at 220V, this solved the problem for me.

Also another thing to think of, A single 3 phase unit will be able calculate all your power uses and combine them to give you a " This is how much power you have used" Whereas individual inverters will give you results about their particular phase, you would then have to collate the data yourself.

If you say the batteries are the same as Dyness, have you tried setting Number 3 (page 24 in the manual), step 1. Select Lithium battery step 2. Select brand 8=Dyness The battery is then automatically set up.

They say max PV power is 6400watts but that is over both strings so it is actually 3200watts per string. Therefore 470x6=2820watts so 6 panels is ideal on one string.

I have a similar arrangement to yours, except I have a Dyness battery, no panels at this stage, purely BU. I watched the Luxpowertek training videos and the presenter suggested the following: (all my other settings are similar to yours) AC Charge (?) According to time Your times are already set. AC Charge Start Battery SOC(%) 20 See if this works better for you.