How Many Amps Does A Laptop Use? (Battery Life Tips + Laptop Battery Capacity)

This article is going to explain a laptop using amps. After reading this article you will end with clear thoughts about how many amps a laptop use, the laptop battery capacity, and tips about saving battery life. 

How Many Amps Does A Laptop Use?

The result is shown after researching 120 best-selling laptops. The laptop mode does have an impact on the amount of the average the laptop is able to draw. 

  • On average if the laptop is in Active mode It typically uses an amperage between 0.1 amps and 2 amps. 
  • If the laptop is in on mode it uses approximately 0.003 amps. 
  • The laptop in Idle mode can use the amperage up to 0.022 amps. 
  • When it is in short idle mode for an hour the laptop use an amperage of up to 0.054 amps. 
Laptop Use
Laptop Use

When we compare the typical laptop to the gaming laptop, the gaming laptop requires more power so it will draw more amps especially when we play games on it. If we compare the maximum average which is listed by the laptop charger and the laptop, the amount of amps the laptop draws is a lot higher than it. 


  • As it is common to have a laptop that has an input amperage lower than the output amperage.
  • The laptop does have an input voltage higher than the output voltage. 
  • The range of the laptop charger input average is from 1 to 4 amps which is the maximum and the output amperage ranges from 2 to 6 amps. 
  • If the laptop is unplugged then the amount of average used by the laptop purchase will depend upon the laptop’s battery capacity.

Laptop Battery Capacity

The battery capacity of the laptop typically ranges from 2000 mAh (milliamps hours) to 7000 mAh. That results in holding the average between two and seven amps hours of battery life.

There are some chargers that do have listed the maximum current draw of 6 amps but it will take less time to use all the batteries which can be between 20 minutes and 1 hour and 20 minutes. Click here to know about the laptop voltage.

Battery life of a laptop:

Now we know about the capacity of laptop batteries and how many amps the laptop use, these will help to know about the duration of the battery life. 

  • The battery capacity of a typical laptop does have a life between 7.4 hours and 26 hours when it draws a low amp. 
  • The battery capacity of the laptop when it draws a high current is between 1 hour and 3.5 hours
  • The battery of the laptop which does have a higher end of battery life is the combination of high battery capacity with low power consumption.
Laptop Use
Laptop Use

What are the tips to increase the laptop battery life? 

The following are some tips that will help to increase the battery life of the laptop:

  • Use the windows performance management tool. 
  • Simplify the workflow. 
  • Close the apps that consume a lot of power. 
  • Adjust graphics and display settings. 
  • Take the HEED of airflow. 
  • Keep an eye on the battery’s health. 
  • Review the battery management system. 
  • Carry a battery backup.

Use the window performance management tool:

The first way to have a better battery life is to manage the laptop’s performance management tool. It does have a group of settings that will affect the battery life easily. There are the following performance management tools:

  • The best-performance Mod will stop all the other apps from reading the background so that it won’t consume a lot of power.
  • The performance Mode helps to Limit the background apps but it prefers first power over efficiency. 
  • Better battery mode will help the battery to deliver longer life rather than using a default setting.
  • A battery-saver mode is an option that is available when the PC is unplugged and it will help to reduce the display brightness by 30%, avoid the window to update downloads, stop the mails and also stop the background app.

Simplify the workflow:

A person who does a lot of work on the laptop by plugging it off so it uses the laptop battery in a battery-conserving way like using one app and sticking to that app at a time and closing all the other apps which are not useful. It does sound like turning off the light when there is no one in the room. If a person does know that they are just editing the document they just can enable airplane mode in the window or turn off the Wi-Fi Bluetooth all this will help to increase the battery life. 

Close the apps that use lots of power:

If in a system at a time multiple apps and processes are running together this will decrease the battery life more quickly. So go to the Settings App and find the energy Hoggiing program then you will be able to see that the app is affecting the battery life more. Then if the battery usage by the apps is open there you will see the apps which are really used hogging a lot of power so close those apps. This will help you to increase the battery life of the laptop.

Laptop Use
Laptop Use

Adjust graphics and display settings:

There are many laptops that have a proper graphic process to make sure that these processors are used only for games or other graphic-intensive apps. You can go to the setting and then do the system after that click on display then graphics where you can adjust the graphic process used by each app or you can choose the window to automatically decide which graphic to be used. This will let you increase the battery life. 

Laptop Use
Laptop Use

Review the battery management setting:

There are recent laptops that automatically monitor the temperature history of the battery and the charging pattern. So by adjusting the software you can use it to adjust full charging to remain below 100% of the battery capacity if the person is not using it regularly as it will help to reduce the number of charging cycles which will help to increase the battery life.


At last, we can conclude that a laptop use an amperage according to the mode as it uses 0.1 amps and 2 amps when it is in active mode, in the off mode a laptop approximately uses 0.003 amps per hour, and in sleep mode it uses 0.007 amps. The battery capacity of a laptop typically ranges from 2000 mAh to 700 mah and then the battery life of a laptop that draws low amps ranges from 7.4 hours to 26 hours. 


Should I adjust the limit of the laptop battery to 80? 

You should not discharge the laptop completely after charging it, however, keep the battery level between 40% to 80%.

What uses the battery most on the laptop? 

The LCD display uses most of the battery on the laptop. 

Rick Costa

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