Windows 7 has added a lot of new features, some of them you can see, but some you can’t even see it. Here is one small trick you can do with your Windows 7 laptop.
We all know that over time, your lithium ion battery will not charge to its full potential as when it’s new. But how much less is the battery charging ?
Well in Windows 7 you can find out how much battery you are actually getting from your 3-cell or 6-cell or even 9-cell battery. Not the number says on the back of the battery, but the real number from the it.
- Start command prompt in Administrator mode (right click->Run as Administrator)
- Then type
"powercfg -energy"
now just wait for some time and Windows will collect all the data and monitor your system
after it’s done, you should now see something like this.
Notice that it generate an energy report in HTML format (by default) to the following directory.
Go to the directory and open up the file. Skip everything and scroll down to the bottom of the report.
some where along the line you should see this. So what does that mean ?
Well it tells you the battery type, and what’s the full capacity and most importantly the last full charge this is the number that your battery can MAX hold.
So here in my case, I got this HP Laptop and its about 1 and half years old. Never replaced the battery and its only charging to about 85% of the original capacity.
Last full charge : 47002 / 55080 ~ 85%
So if you are wondering how come my battery doesn’t last for long, well you got the answer from there.
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