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Why is My Chromebook Laptop Battery Draining So Fast?

Last Updated Jan 25, 2022
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Have you ever been working on your Chromebook when you randomly decide to check the battery life, only to be shocked at how little juice is left in the tank?  There are many reasons, some of which you may be unaware of, that lead to not only shorter battery life but also decreased battery health.

Chromebook laptop batteries lose power quickly due to many factors that include and are not limited to:

  • Prolonged heat exposure
  • High screen brightness settings
  • Background web page and (hidden) application activity
  • Fully charging the battery

This article will cover the factors that have the largest impact on affecting your Chromebook’s battery life.  Read on to learn more about how these factors affect your Chromebook and solutions to these major battery drainers.

Why Does My Chromebook Battery Drain Immediately?

There are many different sources that can drain your Chromebook battery.  Here we discuss a few of the most common issues.  

Prolonged Heat Exposure

Exposing your laptop (and therefore battery) to extended periods of intense heat will permanently damage the battery.  This will quickly reduce the battery’s life cycle.  In other words, it will reduce the lifespan of future battery charges that you make. 

This happens because heat increases the rate of chemical reactions in the battery.  This, in turn, causes minor internal damage to the batteries that can accumulate over hundreds or even thousands of charges.

What to Avoid Heat Exposure

There are many steps that you can take to prevent excessive heat exposure to your Chromebooks:

  • Avoid direct exposure to sunlight
  • Make sure the circulation vents are not blocked 
  • Avoid using your Chromebook while simultaneously charging it
  • Avoid using your Chromebook next to heaters in the Winter

Just be mindful of the conditions that you are using your Chromebook in. For example, if you touch your Chromebook and it feels excessively hot, that is a sign that you could be damaging the battery, leading to shorter battery life.

High Screen Brightness Settings

Screen brightness is undoubtedly one of the biggest factors that determine how long a battery can last.  This is because Chromebooks as well as other modern-day laptops, rely on pixels for displays.

You can imagine your laptop screen as having millions of tiny light bulbs.  The higher you set your brightness settings, the more energy a light bulb is required to use, multiplied by millions!

High Screen Brightness Easy Fix on Chromebook

Luckily, high screen brightness has one of the easiest solutions.  Just simply turn down your screen brightness!  You may also turn off any settings that automatically adjust screen brightness to avoid it setting the brightness too high.  Lowering the screen brightness is the quickest way to see an improved battery life performance.

However, please remember that the health of your eyes is more important.  Do not automatically turn down the brightness to the lowest settings or to too low of settings that would cause you to excessively squint. 

Instead, a better strategy is to gradually lower your brightness settings by one or two levels at a time and allow your eyes to adjust each time.  The goal is to get the brightness low while also avoiding unnecessary eye strain along the way.

Background Web Page and (Hidden) Applications Activity

Open tabs and applications, even those that you are not using, still eat away at your battery life.  However, did you also know that certain applications still run in the background even if you close them?  And yes, this does drain the battery.

Finding Hidden Running Applications

The task manager is present on all laptops, including Chromebooks.  The task manager is an application that shows you a list of all applications and processes that are currently being run on your laptop, even the hidden ones, and allows you to close them.

To access it, use the Search+Esc keyboard shortcut on Chromebooks.  As a side note, the “Search” key is signified by a magnifying glass.  From here, you may scroll through the list of applications and processes, select the applications you want to stop running, and press the “End process” button.

Fully Charging the Battery

Finally, fully charging your battery over multiple cycles reduces the lifespan of the battery.

This happens because the more a battery is charged, the more difficult it is to move the charges to fill the last few remaining percent of the battery.  In other words, it takes more energy to fill an almost full battery which creates stress on the battery.

How High to Charge a Chromebook Battery

The general rule of thumb is to keep your devices charged between 20-80%.  80% is a solid battery supply that offers respectable battery life while avoiding overworking the battery, which leads to shorter battery lives.  On the other end of the spectrum, avoiding 0% is equally as important as it may cause electricity discharge which can permanently damage your battery.


There are many factors to take into consideration when determining what is causing your Chromebook battery to lose its charge.  Although it may seem like your Chromebook battery runs out fast for no reason, there are many steps that you can actively take to extend your day-to-day use battery life. 

In addition, there are essential considerations that can prolong the life cycle of the battery.  This will allow future charge cycles to last longer and allow you to continue using your Chromebook longer.

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