The existence of batteries has played an important role in the development of portable computers like laptops and netbooks. Putting MacBooks aside, a standard Windows laptop has a battery backup of about 6-7 hours on average. Some of the more expensive devices have enough juice to keep you entertained for 11 to 12 hours on a single charge.
However, these batteries, mainly of the lithium-ion type, see their capacity decrease over time. It's entirely possible that a new laptop that can run for 6 hours on battery power will only provide 2 hours of battery life after a few years of use.
You cannot stop the battery degradation process as it is a natural phenomenon, but you can check your laptop battery health from time to time. This will help you know when it's the right time to buy a new one.
Laptop Battery Testing Windows 10, 8.1, 8
Windows 10 (and earlier versions) keeps a record of battery data such as its original specifications, designed capacity, current capacity, etc. It also keeps up-to-date information about battery usage sessions. A command line utility called POWERCFG allows you to access this data in a well-organized manner.
So here is a method that involves using Windows CMD to check the battery status and generate an energy report. You can also generate the Battery Health Report, which shows the charge cycles and performance of your battery over time.
Check the battery status and generate a power report in Windows using the POWERCFG command:
The Windows 10 power report can give an idea of whether its capacity is decreasing over time and whether errors or misconfigured settings are hurting battery life. You can follow these steps to perform a laptop battery life test:
Right-click the Start button. Click Command Prompt (Administrator).
Note: In later versions of Windows 10, the Command Prompt option is replaced by PowerShell in the Start button context menu. You can search for CMD in the Start menu. Next, right-click on CMD and click Run as administrator.
Type the command:
powercfg/energy
It will take 60 seconds to generate an energy report of your battery.
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