Checking Laptop Battery Life in Windows 7
Sledgehammer70
California Icrontian
Windows 7 has a feature through which we can find out exactly how much battery you are actually getting from your Laptop battery, i.e. its efficiency, maximum charge potential.
1. Open elevated command prompt by typing "cmd" in your start menu & opening it with administrator privileges.
2. Type “powercfg –energy†into the command prompt & press Enter.
3. The command enables tracing for 60 seconds & will collect the data after observing the system behavior.
4. It will now generate a report. As you can see you will notice errors, most of which in my case is the system telling me I could save power by adjusting settings on my Laptop.
5. The energy report is generated in HTML format in the directory shown in the command prompt.
C:/User/xxxxx
6. In the HTML file, scroll to the end till you get information like this:
This will show the battery ID, Manufacturer name, Chemistry, Design capacity and most importantly the last full charge.
So as you can see my Dell laptop hasn't lost to much of its charge over the last year. About 12% per say but for 1 year of use that is not to bad.
1. Open elevated command prompt by typing "cmd" in your start menu & opening it with administrator privileges.
2. Type “powercfg –energy†into the command prompt & press Enter.
3. The command enables tracing for 60 seconds & will collect the data after observing the system behavior.
4. It will now generate a report. As you can see you will notice errors, most of which in my case is the system telling me I could save power by adjusting settings on my Laptop.
5. The energy report is generated in HTML format in the directory shown in the command prompt.
C:/User/xxxxx
6. In the HTML file, scroll to the end till you get information like this:
This will show the battery ID, Manufacturer name, Chemistry, Design capacity and most importantly the last full charge.
So as you can see my Dell laptop hasn't lost to much of its charge over the last year. About 12% per say but for 1 year of use that is not to bad.
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