Windows 8 and 8.1 Forums


Battery Usage Report - Generate in Windows 8

  1. #10


    Posts : 1,875
    Windows 10 Pro Prieview x64


    I just tried the built in administrator and it is the same. I did a clean install of 8.1 with update last week and haven't changed permissions or moved user folders, no.

    I can see the battery percentage OK in the notification area. I was trying to run the report as my laptop is shutting down at (I think) 35%.

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  2. #11


    Posts : 22,576
    64-bit Windows 10


    Usually, you get that error message on a desktop computer.

    You could also run an energy report that includes a battery section for some details there.

    Power Efficiency Diagnostics Report - Windows 7 Help Forums

    For the 35%, double check to see what you have set under Battery in Power Options like below to see what percentage and actions you have set for them. This is what would normally do this.

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  3. #12


    Posts : 1,875
    Windows 10 Pro Prieview x64


    The powercfg -energy works fine it is only the -batteryreport that fails.

    I've updated my power plan to sleep not hibernate as I had disabled hibernation as I'm very short of disk space (only having 40GB). Thanks for that - I forgot
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  4. #13


    India
    Posts : 1,536
    Win 8.1 Update x64


    Quote Originally Posted by adamf View Post
    The powercfg -energy works fine it is only the -batteryreport that fails.

    I've updated my power plan to sleep not hibernate as I had disabled hibernation as I'm very short of disk space (only having 40GB). Thanks for that - I forgot
    I too forgot to change hibernate to sleep there after moving to SSD
    Last edited by visruth; 04 Sep 2014 at 05:56.
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  5. #14


    India
    Posts : 1,536
    Win 8.1 Update x64


    It worked for me -

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  6. #15


    Yellow Belly
    Posts : 178
    Windows 8.1 with Bing x64


    I've had my Acer Aspire ES1-512 only a week so the battery is pretty good. They've certainly got more efficient; at least double usage time since I got my last computer. It's advertised at 7 hours usage time but the estimate on my report is about 8 1/2hrs. Wonder how long that'll last?

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  7. #16


    Posts : 179
    Windows 8.1 Pro x64 with Media Center


    Considering that's a Bay Trail CPU and only 7.5 watt TDP, along with 50 mwh capacity 8 hours should be the norm when doing light tasks.
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  8. #17


    Yellow Belly
    Posts : 178
    Windows 8.1 with Bing x64


    Quote Originally Posted by theveterans View Post
    Considering that's a Bay Trail CPU and only 7.5 watt TDP, along with 50 mwh capacity 8 hours should be the norm when doing light tasks.
    What's Bay Trail? Does that mean it's energy-efficient? I did notice in Task Manager That it will clock down to 0.45GHz and up to 2.55GHz even though it's rated at 2.15GHz.
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  9. #18


    Posts : 179
    Windows 8.1 Pro x64 with Media Center


    Bay Trail is code name for Intel Atom and Celeron CPUs for 2013-2014. They're efficient and consume only 7.5 watts under full load. Intel Celeron N2840 - FH8065301903600

    My tablet is Intel Atom z3770 at 1.46 GHz boost to 2.39 GHz (Bay Trail) with 30 mWh battery and I get 8 hours of battery with normal browsing.
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  10. #19


    Posts : 1
    windows 8.1


    wow guys ive been wondering how long my surface 2 pro battery lasts had it about a year, i always fully charge and let run down, i thought it was about 4-5hrs i got :-)
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Battery Usage Report - Generate in Windows 8
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