this post was submitted on 18 Jan 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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5 hours watching a video is not that unreasonable for a machine of that age, especially since it's Intel.
https://www.pcmag.com/reviews/lenovo-thinkpad-t490#:~:text=Video%20Playback%20Battery%20Rundown%20Test
According to this review they got 10 hours with wifi off, playing a 720p video that was stored locally on the machine. Youtube is going to have plenty of background tasks going on, wifi is going to be active downloading things, and you've probably got more than just youtube in the background so I would consider 5 hours to be expected without really delving deep into power saving (and probably killing performance).
Alright, I seem to remember someone saying that I could expect 8 hours of battery life, which is why I asked, thank you! Edit: spelling