我的筆記型電腦電池充電不超過 79%

我有一台戴爾 Latitude-5501（帶有 Linux Mint 19.3 MATE）筆記型電腦大約一年了。一兩天前，它停止充電超過 79%，而且電池很快耗盡。

我不記得安裝了任何特殊的東西，當然，我沒有更改電腦硬體。

即使電腦關閉，我也嘗試為電池充電。在家裡的不同插座充電或斷開和重新連接充電器也無濟於事。

upower -i /org/freedesktop/UPower/devices/battery_BAT0
 native-path:          BAT0
 vendor:               BYD
 model:                DELL 3PCVM9B
 serial:               17481
 power supply:         yes
 updated:              Tue 16 Feb 2021 10:58:40 IST (67 seconds ago)
 has history:          yes
 has statistics:       yes
 battery
   present:             yes
   rechargeable:        yes
   state:               charging
   warning-level:       none
   energy:              43.4416 Wh
   energy-empty:        0 Wh
   energy-full:         54.6288 Wh
   energy-full-design:  68.0048 Wh
   energy-rate:         0.130286 W
   voltage:             16.906 V
   percentage:          79%
   capacity:            80.3308%
   technology:          lithium-polymer
   icon-name:          'battery-full-charging-symbolic'
 History (rate):

系統資訊：

System:    Host: eden-Latitude-5501 Kernel: 5.4.0-58-generic x86_64 bits: 64 compiler: gcc 
          v: 7.5.0 Desktop: Cinnamon 4.4.8 wm: muffin dm: LightDM Distro: Linux Mint 19.3 Tricia 
          base: Ubuntu 18.04 bionic 
Machine:   Type: Laptop System: Dell product: Latitude 5501 v: N/A serial: <filter> Chassis: 
          type: 10 serial: <filter> 
          Mobo: Dell model: 0Y8H01 v: A00 serial: <filter> UEFI: Dell v: 1.6.1 date: 11/14/2019 



Battery:   ID-1: BAT0 charge: 40.8 Wh condition: 54.6/68.0 Wh (80%) volts: 17.5/15.2 
          model: BYD DELL 3PCVM9B serial: <filter> status: Charging 

所以：我更新了所有的驅動程序，並更新到 linux mint 20.1。我將電池完全放電，然後充電至 79%。我關掉電腦充電。達到 100%

upower -i /org/freedesktop/UPower/devices/battery_BAT0
 native-path:          BAT0
 vendor:               BYD
 model:                DELL 3PCVM9B
 serial:               17481
 power supply:         yes
 updated:              Wed 17 Feb 2021 13:02:48 (5 seconds ago)
 has history:          yes
 has statistics:       yes
 battery
   present:             yes
   rechargeable:        yes
   state:               discharging
   warning-level:       none
   energy:              54.6288 Wh
   energy-empty:        0 Wh
   energy-full:         54.6288 Wh
   energy-full-design:  68.0048 Wh
   energy-rate:         4.2256 W
   voltage:             16.969 V
   time to empty:       12.9 hours
   percentage:          100%
   capacity:            80.3308%
   technology:          lithium-polymer
   icon-name:          'battery-full-symbolic'
 History (charge):
   1613559761  100.000 fully-charged
 History (rate):
   1613559768  4.226   discharging
   1613559761  0.015   fully-charged

如果電池在關閉時沒有充電超過 80%，這似乎不是 linux 的問題。

錯誤猜測：68Wh 的電池有 4 節電池，所以我確信一節電池大部分都死了。電池短路也可以解釋電池快速耗盡的原因。

補充：你有可能一天換電池或筆記型電腦嗎？

補充：好像是驅動問題。

引用自：https://unix.stackexchange.com/questions/634736