How to choose a UPS with a long battery life for a laptop?

Question

Uninterruptable power source

Hello, I need a UPS with a long battery life (from 2 hours) for a laptop.
Notebook model GT70 0ND, power supply 180 watts.
Here is the laptop model itself https://club.dns-shop.ru/review/t-67-igrovyie-nout... The
laptop is not for games, only office documents, movies and the Internet.

Can anyone tell me how to calculate or advise a specific model. The budget is limited, if possible, then within 10 thousand rubles.

Answer 1

A more compact and economical solution would be a Powerbank with Type-C, you just need to make sure that it is powerful enough - my bank is 20A * h, for example, my laptop (also 180W) does not draw.
Here are two banks in series and a regulator - they will definitely cope.

Answer 2

HERE and look for a 600 watt UPS for example.
APC is good