I haven't read the whole thread but i bought the Mecer 2400Va inverter with deep cycle battery option about 2.5 years ago from Geewiz. Best R7500 i have ever spent. It is still running perfectly after 2.5 years. I keep the charger on 24/7 to top up the batteries . We have our laptops , monitors...
I also have the 55A6100UW and had the same Netflix issue having to reset the Netflix app very night. Downloaded new firmware from Hisense website and installed via USB. No issues anymore.