Hi.
I had difficulty setting the thing up properly from the panel as I couldn't connect via the dongle as the dongle that came as the package didn't connect.
After many emails to their so called customer service they sent a new dongle that did connect, this took 18 months of wrangling with them.
The original dongle apparently wasn't compatible with modern home routers??????
With that sorted I thought it was clear sailing but no, the inverter had different ideas.
Out of the blue the inverter started discharging all the battery power to the grid, this was not set up to discharge the batteries to the grid, it would discharge until the batteries had 0 volts.
This happened on any day, most days the panels were producing 6Kw per hour but the batteries still went dead, once dead the inverter couldn't actually see the batteries so they wouldn't start recharging them.
I later found out that this fault is common as others on other forums I've talked to have had the same issue.
I even bought a mains to 48v battery charger to get the batteries back to where they would charge from the inverter, which as you can imagine sort of defeats the whole exercise.
Growatt customer service than told me that the mains smart meter was at fault and I need to change it.
My son works as an electrical engineer for a major power supply company and told me that if the smart meter was at fault the power company would have had it swapped out even before I knew it was faulty, I still have the original smart meter in use.
Sick and tired of the run around with Growatt I went and bought a Deye 5Kw hybrid inverter and couldn't be more happy.
NingBo Deye Inverter Technology Co.,Ltd is famous hybrid inverter manufacturers and grid interactive inverter suppliers, we offer hybrid inverter with solar battery charging.
www.deyeinverter.com
The Deye is far easier to set up, the dongle connected first time too, it charges and discharges more amps AC and DC if you set it up properly, TOU is easier to set up, the batteries have never gone past the discharge floor that I have set.
I will admit that for ease of use after installing the Deye I went and bought a monitoring system from
https://solar-assistant.io/
This monitoring system makes adjusting the inverter a breeze from anywhere that you have an internet connection.
The Growatt is still hanging on my wall waiting for me to take it off and throw it in the rubbish, the Growatt is just junk in comparison to the Deye.