How to Test the Battery Health of Your Chromebook

Here is a quick tip from François Beaufort to test the battery health of your Chromebook. All you have to do is enter the Chrome OS command line using Ctrl + Alt + T and enter the following command:

battery_test 0

That will run a (very) short test and tell you how good your battery is now.

My Samsung Chromebook  Series 5 550 shows 69% and I found at least one more 5 550 user with similar results on Google Plus. Pixel users seem to get around 90 – 95, and there are people reporting CR48 still holding up at 100%. Test your battery health now and let me know in comments!

A quick note on Batter Health from Wikipedia:

State of health (SOH) is a figure of merit of the condition of a battery (or a cell, or a battery pack), compared to its ideal conditions. The units of SOH are percent points (100% = the battery’s conditions match the battery’s specifications).

Typically, a battery’s SOH will be 100% at the time of manufacture and will decrease over time and use. However, a battery’s performance at the time of manufacture may not meet its specifications, in which case its initial SOH will be less than 100%.

So, what’s your number?

  1. Thanks for the tip. I have a 99% on my 3-4 month old HP Chromebook 14.

  2. You wrote ‘batter_test 0’ when it should be ‘battery_test 0’

    1. Sorry!… fixed it…

  3. thanks very much for this! My Samsung series 5 Chromebook 550 is 82% my other chromebook can’t do the test as its an acer C710 I bought without a screen or working battery that I use as a desktop pc

  4. Both my Acer C720 chromebooks (4 mo old) checked out at 98%. Thanks for the tip!

  5. 94% on my acer c710, 9 months old.

  6. My 550 is at 63%. The old soldier has served it’s time though. I’ve used it 12-16 hrs/ day for 5 days a week for the last 2 years. I’m just waiting on a good replacement. Not too impressed with the latest offerings from Samsung or Asus though.

  7. Funny – my Chromebook seems to run on a non-existing battery ..

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