How to: Powercfg Battery Report
[Powercfg](https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/powercfg-command-line-options) is a tool built-in to Windows that generates detailed report on battery health of your Windows device. 

To generate a battery report, **press Windows Key + X and select Command Prompt**. Then type in **powercfg /batteryreport**. This command saves a battery report in HTML format to

```C:\Users\Your_Username\battery-report.html```

Open the file in your browser and check the following parameters:

  * The difference between Design Capacity and Full Charge Capacity. As batteries wear over time, the full charge capacity will be less than the design capacity.
  
  * Battery capacity drained over the last few days in different power states. Also, check out the battery usage graph.
  
  * Compare the battery life from the time you purchased the laptop and see the trends of Full Charge Capacity in relation to Design Capacity.
  
  * Check the battery’s usage and duration. And the time your computer ran on battery or plugged into the power outlet.