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You wouldnt be powering your pc with a power bank.

Well for now I do most of my tasks on my phone. It is good enough. And I plan to get an inverter in the coming months

Getting an inverter is an amazing idea. As power holding companies may decide to misbehave, especially in times like these.

But they are not cheap. I am looking for a way to pay installments to acquire atleast two lithium batteries

There are companies that accept installmental payments for inverters. I've witness a few but I can't quite place their names.

A quality power bank is a good investment.

So does everyone use petrol generators at home?

What is the exhaust and noise like?

Especially in dense residential neighbourhoods made up of townhouses or apartments?

Lol it is nightmare. The noise and air pollution is crazy in neighborhoods would dense population. I am fortunate to live in a less densed area but even at that the noise is significant

Oh man, not good!