This specific product, apart from not smelling like plastic as they say about others, makes no noise at all. When it's on batteries, it makes a little buzzing sound. In editing, it lasted 1 hour and 40 minutes (with the monitor turned off) during intentional breaks and a random one; I didn't notice anything, it worked normally! The only problem... the beep beep when the power goes out, I can't turn it off in any way, and that it doesn't have a screen (to my knowledge)

Very good, it supports a whole Gaming PC system 1200W plus speakers, monitor, PlayStation 5. It is very heavy as expected and so far it has held up very well during about 10 power outages. I haven't checked how long it lasts because I always turn off the systems when an outage is detected, but I estimate it lasts 1-2 hours.

As I live in a place that has frequent power outages (sometimes momentary and sometimes half an hour+), I needed it from the first day.

I have connected to it 1 PC, 1 monitor, the internet, and a power strip that has the speakers, a light, and chargers for mobile phones, etc.

In brief outages, I obviously don't notice anything, while in outages longer than half an hour, I simply shut down the PC after about 20 minutes to keep the internet running longer.

In a prolonged outage where only the internet was on, it lasted 6 hours.

I can say that it was the best choice I have made.

Completely silent, it can handle 2 desktops of 650 watts. It has a high voltage alert if something like a vacuum cleaner or other device that shouldn't be plugged in.

For now, it works well, it is completely silent. I have connected an LG OLED 55'' TV, PS5, and an LG soundbar. During a short power outage, everything stayed on, but I don't have an opinion on how long the devices can stay on. The only thing I would like is a front screen with indicators to know the battery status mainly.

Too early to evaluate, as it has not been needed yet.
1. Completely silent
2. Quite heavy, although small in size
3. Appears to be very well constructed