Typically, laptop batteries don’t last long. By nature, Lithium-ion batteries deteriorate in power over time, and that’s why you may need a new battery after a year or more. Lithium-ion battery life isn’t impressive, and if your laptop has been shutting down recently for no apparent reason, it’s time to check the health. Battery health status will show you if the battery is the one causing those unexplainable laptop shutdowns at 30% to 40%.
How to Check Laptop Battery Health
Step 1. On Windows 10, press the Windows key + X key. You’ll see a pop-up menu with a variety of options.
Step 2. Select the Windows PowerShell (Admin). If you see a pop-up asking you for permission to make changes to your system, accept it.
Step 3. Copy powercfg /batteryreport /output “C:\battery-report.html” paste it in PowerShell. Click Enter key to run the command.
After the command has finished running, PowerShell will return: “Battery life report saved to file path C:\battery-report.html.”
Step 4. Close the Windows PowerShell
Step 5. Open your Windows File Explorer
Step 6. Head over to your Windows (C:) drive. You’ll see a new HTML document named battery-report.
Open it to see your laptop battery report, including the number of installed batteries, battery health, recent usage, usage history, capacity history, and battery life estimates.
What Windows 10 Battery Health Metrics Mean
At the top of the report are brief details about your computer, including computer name, system product name, BIOS, OS Build, and the time the report was generated.
This metric shows each battery installed on your laptop, its design capacity, and the current full charge capacity. The battery design capacity is the advertised capacity, and the current full charge capacity is the maximum amount of charge your battery can take. The cycle count is the number of times the battery has been charged, although the report doesn’t provide that.
Take note of the current Full Charge battery capacity. If it’s less than 50%, it’s no surprise your battery can’t hold out more than it used to.
Recent usage shows the different power states over the last three days. It shows charges done in the past three days.
This section gives you a full view of the battery drains done in the past three days.
Usage history combines both Recent usage and Battery Usage. You get to view the history of system usage on AC and battery.
Battery capacity history
Capacity History is where the most important details are. Battery capacity history shows the battery’s design capacity and how that has been changing over the last few months. For instance, from my laptop battery health report below, the design capacity is 41,610 mWh, but as of today, the battery capacity is 28,009 mWh.
If there’s much disparity between the two figures(over 50%), it’s best to replace your laptop battery. If you don’t, prepare to be connected to the socket most of the time while using the laptop.
Battery life estimates
The final section, battery life estimates, gives you an idea of how long the battery lasts currently vs. design capacity. From the report below, my battery lasts about 1:59:45, but at designed capacity, it could last over three hours.
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