I have bought many cheap Chinese flashlights for 15-20 euros that initially light up for 45 minutes to 1 hour and then their performance completely drops. After a few recharges, they end up lasting only 25-30 minutes on a strong setting. Very little, in other words, for anyone who wants it for camping.
This specific Nebo Galileo Air 1000 is a serious product that does what it promises. I left it on the medium setting at 500 lumens (more than enough brightness for camping) and indeed its power started to decrease exactly after 5 hours. It worked flawlessly and brightly until the 5-hour mark. In reality, even its low setting at 100 lumens, which lasts for 10 hours, is sufficient as a relaxed flashlight. Its high setting at 1000 lumens (lasts for 1 hour) is indeed very powerful but will only be needed for tasks that require a short amount of time.
It charges with a USB, just like a mobile phone (so it can also be charged from a power bank), in about 4 hours.
It is better to invest in something more expensive that does the job you need rather than wasting money on cheaper options that ultimately don't do the job for you.