Windows 10: Αν η διάρκεια ζωής της μπαταρίας του φορητού σας υπολογιστή, σας φαίνεται μικρότερη τα νέα δεν θα σας αρέσουν. Οι batteries they are disposable and it is very common for them to not last as long as your laptop.
Over time and in use, battery capacity decreases. So if it takes far less time than you bought it laptop you probably will have to buy a new one. 
This can be done very easily as the batteries can be removed by the user himself. If your computer contains the battery internally, it is a good idea to look for the manufacturer's instructions before downloading the screwdriver.
But how will you know for sure that you need a new battery on your laptop?
From Windows 8 onwards the Microsoft has added to functional of the system a battery usage and performance report.
Below we will see how you can use the feature to see the capacity of your battery compared to its "design capacity". This capacity is usually rated in Watt per Hours (Wh) and is statistical.
Battery history function, as mentioned above, is integrated with Windows 8 and Windows 10. It will compare your current battery capacity with the original capacity, so you can see how well it performs. If today's capacity has dropped significantly, you should buy a new battery.
To create a report for your battery, open a command prompt window by pressing the two Windows + X keys together and in the RUN window that opens write cmd and press Enter. Copy and paste the following command:
powercfg /batteryreport /output διαδρομή\iguru.html
The "route" is the complete one name of the path to the folder where you want to save the report, such as:
c:\Users\giorgos\Documents\iguru.html
Folders should already exist as the command will not create folders for you.
Press Enter and create an HTML file called iguru.html. You can open it with your browser. The above command only works on devices that have a battery. So do not try it on your desktop computer.
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Very nice! Write an article on how we can do battery calibration on laptops and mobiles
Not for me of course! It is for me to be able to send the article to people who have difficulty with English, to have a good guide in Greek to do the battery calibration correctly. :)