| Rich Mingin (PLUG) via plug on 22 Apr 2025 15:18:38 -0700 |
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| Re: [PLUG] Power consumption difference |
If your laptop supports it, you may want to look into charging limits. Framework added them, and they're still fine tuning, but I've seen similar options on Mac and on the software side. Essentially, past about 80% of capacity, any charging you do does chemical damage to the cells. Not a lot, but it adds up over time. With an almost-always plugged-in laptop, you can take it from 100%+ of design capacity to less than 50% in under a year, if you hit all the worst cases. By limiting to ~80% except when I know I'm going to *need* all the battery I can get, I'm still slightly over design capacity after a year. You also want to avoid cycling (charge/discharge cycles) when possible. Firmware assistance is a big, big deal. On Tue, Apr 22, 2025 at 2:02 PM K.S. Bhaskar via plug <plug@lists.phillylinux.org> wrote: > > A final note: Although the battery lasted longer with EndeavourOS+Cinnamon than with Manjaro+Plasma, the former was still insufficient to get me through a meeting. As upower told me that the battery was not charging above something like 54% of capacity, I replaced the battery this weekend, and the new battery got me through a 3 hour meeting yesterday evening. Starting with a battery at well over 90% charge, after three hours it was down to something like 50%. I'm disappointed that the original battery only lasted two years, and hope the replacement does better. > > Now I have to find out where to responsibly dispose of the old battery… > > Regards > – Bhaskar > > On Wed, Mar 26, 2025 at 12:07 PM K.S. Bhaskar <ksbhaskar@gmail.com> wrote: >> >> My laptop can boot either Manjaro Linux or EndeavourOS, both Arch Linux derivatives and both patched reasonably recently (within the last week). Manjaro has a 6.12.19-1-MANJARO kernel with the Plasma desktop, and EndeavourOS has a 6.13.7-arch1-1 kernel with the Cinnamon desktop. Both have the power profile set to Balanced. Interestingly, when running on battery, no external devices connected, Bluetooth and wifi turned on, I seem to get 1-2 hours when I run Manjaro and 2-3 hours when I run EndeavourOS. In both cases, I am just doing light work like e-mail, reading online documentation, etc.; nothing like compiling, or playing games. I just noticed this difference recently and have not done formal measurement. I wonder whether the difference is the kernel, the desktop, or something else (like random variation into which I am trying to read something meaningful). >> >> Regards >> - Bhaskar > > ___________________________________________________________________________ > Philadelphia Linux Users Group -- http://www.phillylinux.org > Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce > General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug