通过电池获得系统正常运行时间？

Question

如何知道电池下系统的正常运行时间？这样我就可以获得准确的电池备份时间，显示uptime完整的正常运行时间（交流电/电池）

注意：我使用的是 Linux Mint 17。

Answer 1

您可以使用 UDEV 获取有关系统电池的详细信息。

连接到电源

$ upower -i /org/freedesktop/UPower/devices/battery_BAT0
  native-path:          /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0a/PNP0C09:00/PNP0C0A:00/power_supply/BAT0
  vendor:               Panasonic
  model:                42T4801
  serial:               624
  power supply:         yes
  updated:              Sat Oct 18 13:17:16 2014 (2 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               fully-charged
    energy:              80.5788 Wh
    energy-empty:        0 Wh
    energy-full:         80.9892 Wh
    energy-full-design:  84.24 Wh
    energy-rate:         0.00372912 W
    voltage:             12.224 V
    percentage:          99.4933%
    capacity:            96.141%
    technology:          lithium-ion

电池

$ upower -i /org/freedesktop/UPower/devices/battery_BAT0
  native-path:          /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0a/PNP0C09:00/PNP0C0A:00/power_supply/BAT0
  vendor:               Panasonic
  model:                42T4801
  serial:               624
  power supply:         yes
  updated:              Sat Oct 18 13:37:36 2014 (22 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    energy:              79.9524 Wh
    energy-empty:        0 Wh
    energy-full:         80.9892 Wh
    energy-full-design:  84.24 Wh
    energy-rate:         17.172 W
    voltage:             11.94 V
    time to empty:       4.7 hours
    percentage:          98.7198%
    capacity:            96.141%
    technology:          lithium-ion
  History (charge):
    1413653856  98.720  discharging
    1413653826  98.893  discharging
    1413653796  99.080  discharging
    1413653766  99.293  discharging
  History (rate):
    1413653856  17.172  discharging
    1413653826  17.399  discharging
    1413653796  17.453  discharging
    1413653766  17.345  discharging

我从来没有见过任何显示电池消耗时间的东西，所以你必须根据上面的输出来计算它。此外，此输出通常会显示“充电时间”，这是其通电时间的粗略指标。