Comment vérifier l'état de la batterie de votre ordinateur portable sous Windows 10 et 11
How to Generate a Battery Report on Windows
Importance of Laptop Battery Life
- The autonomy of a laptop is a crucial factor when purchasing, especially for new devices.
- For second-hand laptops, battery life can vary significantly due to factors like recharge cycles and usage patterns.
- Understanding battery health is essential to avoid disappointments when buying used laptops.
Generating the Battery Report
- To generate a battery report, open Windows PowerShell by right-clicking the Start menu and selecting "Terminal (Admin)."
- A prompt will request permission to make changes; confirm with "Yes."
- Enter the command
powercfg /batteryreport /output C:battery-report.htmlto create an HTML file containing the battery report.
Accessing and Understanding the Report
- After generating the report, navigate to where it was saved (e.g., C: drive).
- Open the HTML file in your default web browser to view basic information about your laptop, including brand and BIOS version.
Analyzing Battery Specifications
- The report includes specifications such as battery capacity and recent usage data over three days.
- It tracks whether the laptop was used on battery or plugged in, providing detailed consumption metrics.
Historical Data Insights
- The historical section shows when the laptop was first used, which is valuable for assessing second-hand purchases.
- Capacity history indicates how battery performance has changed over time; decreasing capacity suggests normal wear while drastic drops indicate potential damage.
Estimating Current Battery Life
- The estimation section compares expected versus actual battery life based on current capacity.
- Users can calculate their current charge percentage by dividing current capacity by nominal capacity; this helps assess if a replacement is needed.