I'm using Ubuntu 16.04 on my Laptop. I have Lenovo G40-80 and the battery is absolutely new (I actually got it yesterday). However, it doesn't matter how much time the battery is charged, it never exceeds 59%.

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I understood that this has something to do with "units battery". I don't know what this term means, and I got the following guidance how to solve it on Windows OS:

  1. Please search under “settings” for “energy” and click “Change Battery settings”

  2. Then click “change plan settings” and then “change advanced power settings”

  3. Then click the tab for “Lenovo energy management” and then “Enable Lenovo energy management”

  4. Under Battery the settings from “Optimized Battery Health” as shown below to “Maximum Battery Life”

Do you have any idea how to see solve this issue on Ubuntu?

  • 1
    You can't under Ubuntu nor the BIOS:. However, the settings you have are set up for very long battery life, so not too bad neither... – Fabby Nov 25 '16 at 10:22
  • so... what you actually say is that is can't be resolved? – CrazySynthax Nov 25 '16 at 10:45
  • This problem cannot be resolved under Ubuntu. These are settings that were set under Windows and they need to be resolved under Windows. :-( – Fabby Nov 25 '16 at 10:46
  • What causes Ubuntu to define 'full charge' as 59%? It doesn't make sense. It is even a bug in Ubuntu. – CrazySynthax Nov 25 '16 at 10:50
  • Do you also have Windows installed? If so, does it have the same bug? – insert_name_here Nov 25 '16 at 11:03

The only way to fix this if your computer isn't a ThinkPad is to use Lenovo Power Management, which is only available on Windows, to change the battery threshold settings.

This is caused by the charge threshold being set to 59% in the Lenovo Power Management application, which is, unfortunately, only available on Windows. This setting is contained in the computer's firmware, so it will persist across operating systems. There is a utility for Linux that can change the battery thresholds, but it's only compatible with ThinkPads.

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