In the Last day i found this interesting Power bank with Ac Output.
This is fantastic because whit this Power bank with 27000mAh and with solar Solar Charger you can be Free with only 200$.
You can connect your device like Tv, smarphone, and other things in the Power bank
The PowerBank is From RavPower a U.S.A company
It cost Only 169$ and if you want spend less there is cheap version
Amazon $169.99
Amazon $139.99 Cheap Version
Cheap Version with 20100mAh
Solar Panel I advice BigBlue 5V 21W
They can be connected with Usb and you can Be Free from Energy company
https://www.amazon.com/dp/B01KH2GY32/ref=twister_B01LYZCQM6?_encoding=UTF8&psc=1
I know the quality of the Post isn't good but I hope you like the idea.