Dell XPS 13 9360 battery capacity


I have a Dell XPS 13 9360 which is ~3,5 years old. I have Manjaro XFCE along Windows 10 on it, however I rarely use Windows, but I need it occasionally.

Battery capacity isn’t what it has been, although I know a lot of it can be explained taken the age into account. However, I’m a little suspicious that Manjaro has some influence or I have forgotten to configure something I’m not aware of, as I get roughly the same uptime when I use Windows. I’d expect to have a longer uptime when using Manjaro, but maybe I’m wrong?

Output of sudo tlp-stat -b

--- TLP 1.3.1 --------------------------------------------

+++ Battery Features: Charge Thresholds and Recalibrate
natacpi    = inactive (laptop not supported)
tpacpi-bat = inactive (laptop not supported)
tp-smapi   = inactive (laptop not supported)

+++ Battery Status: BAT0
/sys/class/power_supply/BAT0/manufacturer                   = SMP
/sys/class/power_supply/BAT0/model_name                     = DELL TP1GT61
/sys/class/power_supply/BAT0/cycle_count                    = (not supported)
/sys/class/power_supply/BAT0/charge_full_design             =   7894 [mAh]
/sys/class/power_supply/BAT0/charge_full                    =   3562 [mAh]
/sys/class/power_supply/BAT0/charge_now                     =   3562 [mAh]
/sys/class/power_supply/BAT0/current_now                    =      1 [mA]
/sys/class/power_supply/BAT0/status                         = Full

Charge                                                      =  100.0 [%]
Capacity                                                    =   45.1 [%]

It shows that my capacity is roughly halfed, but can it be a mistake that it just ‘thinks’ that it is full when it reaches 3562 mAh and therefore stops charging due to some configuration issues?

I thought maybe calibration could be done in some way or another.

Hope someone has 2 cents to spare on this one.
Thanks in advance :slight_smile:.

The battery should be replaced because the old battery is worn out and no longer gives full capacity. I have just done this my Dell XPS 13 9360 laptop and the new battery gives more than 12 hours usage time, according to Powerdevil.

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