Unpackaged the Growatt and the WiFi module. Fought my way through the user manual and some online video tutorials. I bought a 12/3 heavy duty extension cable and cut it in half. I then used it to create my AC input and output. I connected my two 200Ah batteries in series and connected them as well. I plugged in the Growatt and proceeded to go through the menu's and configure. There are a lot parameters, and some of them I would like to highlight here for anyone thinking of buying one.
This unit covers all of the bases as an AC charger, a solar charge controller and a DC to AC power inverter all in one convenient package. Also, at a reasonable price. If you have LiFePO4 battery/batteries, and they have specific charging parameters. For example, I have two 200Ah LiFePO4 batteries right now, and the manufacturer recommends 40A current for the bulk charge with a max of 29.2V in series for absorption, and float is 27.2V. Every single parameter can be individually set. My Growatt model is capable of 60A charge current.
Now to solar. I can set each individual parameter as listed above for charging my batteries with the integrated solar charge controller. You can set the charge current (amperage), the max voltage cut-off, and the float voltage.
The integrated DC to AC power inverter also has the ability to switch between 110V and 120V output as well as the frequency of 50Hz and 60Hz.
At this Time I still have a ton of configuring to do, but the functions that I wish it had are all present and work well. I am happy with it, and glad I purchased it. The fans run all of the time, but are only loud under heavy load. There is a "Power Saver" mode that turns off the inverter when there is no load. Mine has a constant 6W load on standby. No sun here for weeks now, so the solar charging will have to wait.
I will say the the WiFi module is giving me a really hard time. No success in connecting it to my network yet. The instructions are very weak. Doing the YouTube thing for that now.
Once I feel comfortable with my configuration, I am going to do a battery load test for max output. I will post pictures later, and also post the results as well.