Quick Battery Power Monitor

watch -n 5 "upower -d | grep energy -A 4"
Convenient to leave running in a yakuake or plasmacon terminal. For older kernels watch -n 5 cat /proc/acpi/battery/BAT0/state
Sample Output
Every 5.0s: upower -d | grep energy -A 4                                                                                                            Mon Apr  2 18:29:54 2012

    energy:              86.6688 Wh
    energy-empty:        0 Wh
    energy-full:         94.128 Wh
    energy-full-design:  97.68 Wh
    energy-rate:         21.312 W
    voltage:             12.015 V
    time to empty:       4.1 hours
    percentage:          92.0755%
    capacity:            96.3636%

By: aidanlinz
2012-04-02 22:33:37

These Might Interest You

  • Displays battery power status Show Sample Output

    SkyKnight · 2010-04-13 15:15:09 0
  • Fully recharge your computer battery and start this script. It will create or clean the file named battery.txt, print a start on it and every minute it will append a time stamp to it. Batteries last few hours, and each hour will have 60 lines of time stamping. Really good for assuring the system was tested in real life with no surprises. The last time stamp inside the battery.txt file is of interest. It is the time the computer went off, as the battery was dead! Turn on your computer after that, on AC power of course, and open battery.txt. Read the first and last time stamps and now you really know if you can trust your computer sensors. If you want a simple line of text inside the battery.txt file, use this: watch -n 60 'date > battery.txt' The time of death will be printed inside Show Sample Output

    echo start > battery.txt; watch -n 60 'date >> battery.txt'
    m33600 · 2009-10-18 07:00:26 0
  • Works on Laptops, Desktop having communication b/w UPS & CPU Show Sample Output

    NotifyOnBATTERY () { while :; do on_ac_power||notify-send "Running on BATTERY"; sleep 1m; done }
    totti · 2011-08-26 11:54:16 0
  • This time I added a print to reemaining energy, every minute, time stamped. The example shown here is complete and point to large discrepancies as time passes, converging to accuracy near the end. Show Sample Output

    echo start > battery.txt; watch -n 60 'date >> battery.txt ; acpi -b >> battery.txt'
    m33600 · 2009-10-19 05:28:15 0

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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