Battery Management

Battery Management

Maximize battery life

Maximize battery life on the Kubuntu Focus M1 or M2. Fix the battery if it does not hold a charge.

Please read the disclaimer before proceeding. This solution is updated regularly. Please write authorship with suggestions or requests.

Expected Battery Life

Over 20 optimizations are employed to extend battery life. The most obvious are listed below:

The Kubuntu Focus M2 has a 73Whr battery. A new battery will last around 11 hours when doing nothing on Intel graphics and the dimmest screen settings. With modest use, a full charge should provide up to 7 hours with the Intel iGPU, or up to 3.5 hours with the Nvidia dGPU. This will vary depending on the applications used and the battery condition.

The Kubuntu Focus M1 has a 62Whr battery. A new battery will last around 8 hours when doing nothing on Intel graphics and the dimmest screen settings. With modest use, a full charge should provide up to 5 hours with the Intel iGPU, or 2.5 hours with the Nvidia dGPU. This will vary depending on the applications used and the battery condition.

Maximize Battery Life

Browsers, cloud drives, IDEs, and other apps can draw power quickly. Here are steps you can take to maximize battery life.

Troubleshooting

Q: I use Insync and have noticed that it can sometimes use 100% or more CPU and spin up the fans. This can't be good for performance or battery life. How can I improve this?

A: Your observation is correct. Right click on the Insync system tray icon and select Quit. This will stop syncing and reduce CPU use. Restart Insync from the application menu to resume syncing. CPU use should drop to 1-3% after restart. See this Insync Issue for details.

Q: Sometimes the battery will not fully charge. The battery meter may report only 5 or 10% charge and not increase from there. How can I fix this?

A: Perform a battery reset shown below. Make sure the battery is discharged using the BIOS and not the OS. The latter has protections that will prevent this procedure from working.

After this procedure battery should attain 90-100% charge. The capacity available will depend on age.

Q: I use IntelliJ, WebStorm, PyCharm or other Jetbrains IDE. I’ve noticed they really reduce battery life. How can I improve this?

A: Click on File > Power Save Mode. This should provide a noticeable boost in battery life.

Q: I’ve noticed that battery life can vary. What are some things I can do to improve it?

A: Some applications draw much more power than others. IntelliJ IDEs are discussed above. Other computationally or graphically intensive apps like benchmarks and games can draw the battery down quickly. Browsers are also notorious for draining the battery, and Chrome is probably the worst culprit. If you don’t need a browser open, close it. If you do, keep the number of open tabs to a minimum. You may also consider using a different browser.

Revisions

This is a partial revision history. See the git repository for all entries.

Disclaimer

We try hard to provide a useful solution validated by professionals. However, we cannot anticipate every situation, and therefore cannot guarantee this procedure will work for your needs. Always backup your data and test the solution to determine the correct procedure for you.

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