How to check the bottle of Laptop Battery without software

In the previous article I have very detailed instructions for you how to save battery power when using a Laptop, although the title I wrote is to save battery power for Windows 7 laptops, but you can apply for real any version of Windows, including the most recent one which is Windows 10.

Saving Battery & using the battery properly will help you use the battery for longer and minimize the battery bottle when using the Laptop .

No matter how careful using it or how to charge it properly, the battery bottle is inevitable, over time, your Laptop battery will gradually wear out and lead to damage and need to be. instead of, replace.

So how to know your Laptop battery has been bottle (wear rate) is how much?

Yes ! In this article, I will guide you how to check the most accurately without using the software.

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You can also use the BatteryBar software that I introduced in the previous article to manage the Laptop Battery effectively.

With the use of this software, you can set up a low battery warning for your laptop and view detailed parameters and bottle level at any time. If you do not like to do it manually, you can use that software to check.

1. Instructions to run cmd under administrator

First, you need to know how to open the cmd window as an administrator, to do this, please follow the following instructions:

+ On Windows 7, click the button  Start => enter the search box as cmd => and press Enter => then right-click the file cmd.exe => and select Run Adminstrator.

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+ On Windows 8, press the key combination  Windows + S and enter  cmdto search => then also run Command Promptunder administrator.

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+ On Windows 8/1 and Windows 10 you just need to press  Windows + X  => and choose Command Prompt (Admin) to run as admin.

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2. Check the bottle of Laptop Battery

After the window cmdappears, enter the command  powercfg -energy=> and click Enterto execute.

Note: You can use copy - paste, you don't have to type the key (in cmd, you just need to right-click the Paste command .)

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You wait 1 minute for the program to start performing bottle analysis of the Laptop Battery .

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OK, now you can follow the path C:Windowssystem32energy-report.htmlto open the file. Or, follow one more step to copy the file to the Desktop for convenience, do the following:

Copy the following command into the window cmd => and click Enterto execute:

copy 'C:Windowssystem32energy-report.html' '%userprofile%/Desktop'

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A file will appear on *.htmlthe desktop like this. Double click to open it to see the information inside.

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There is a lot of information about your computer here, but we are only interested in the battery problem so please look to the section Battery:Battery Imfomartion. 

Note: You can press Ctrl + F to search quickly.

Here we get the parameters in the section:

1. Design Capacity: 41440 - This is the design capacity of the battery provided by the manufacturer.
2. Last Full Charge: 35224 - This is the last full charge.

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3. How to calculate the bottle of Laptop Battery

Having 2 above parameters, now how to know how much% has worn out your computer (battery bottle)? You perform the calculation as follows:

100 - (35224/41440) * 100 = 15% >> Laptop battery has been worn out 15%.

4. Use the BatteryBar software to see the battery bottle level

And here is how we see the bottle of the Battery with BatteryBar software, the wear rate (battery bottle) is also 15% offline. In fact, some software that checks the battery's bottle level also get the parameters from the above method.

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5. Conclusion

Very simple like that! So I have a very detailed guide to you how  to check the bottle of  Laptop  Battery correctly. This is a tool provided by Microsoft so you can count on it. Many of you said that you bought and used the battery very carefully, how can you bottle so fast, probably because the software is miscalculated, it's not like that.

And Laptop Batteries are now quite cheap, so you do not need to be "too careful" in using them, but instead you should use how to make the computer more damaged than that, but the battery does not.

Hope the article will be useful to you, wish you success!

Marvin Fry

Update 03 February 2021