battery recalibration needed: energy-full is twice energy-full-design
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I got a new battery from an online provider, unfortunately in retrospect I am doubtful that they ship quality material.
However the battery appears to give a decent autonomy to the laptop (Asus X550 running Debian), but it needs recalibration, as showned by
upower --monitor-detail
(selected lines):
energy: 76.455 wh
energy-empty: 0 Wh
energy-full: 91.995 Wh
energy-full-design: 44.25 Wh
percentage: 83%
capacity: 100%
energy-full
is twice as much as energy-full-design
, as if it could be charged at 200% ...
Also when unplugged and going down to ~50%, the laptop actually runs out of power.
So it seems like I should just decrease the values of energy-full
and energy
by about 45 or 50 Wh.
How to do that? There are corresponding files in /sys/class/power_supply/BAT0/{energy_full,energy_full_design,energy_now}
, are they read-only?
I saw mentions of tlp recalibrate
, but this seems geared towards ThinkPads, is it worth trying?
-----
Other lines of output from upower
:
rechargeable: yes
energy-rate: 22.185 W
voltage: 15 V
charge-cycles: 435
time to full: 42.0 minutes
technology: lithium-ion
[EDIT (2025/02/04)] Similar questions:
- https://askubuntu.com/q/1256993/382931 (solved by changing the battery)
- https://superuser.com/q/1580049/524058
Asked by PlasmaBinturong
(751 rep)
Oct 10, 2024, 09:48 PM
Last activity: Feb 4, 2025, 08:14 PM
Last activity: Feb 4, 2025, 08:14 PM