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One Command Creates A Full HTML Battery History On Windows

Solvedbatterylaptopwindows12 replies · 506 views · started
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Accepted solution by Kofi — hmmm ran it on my 4 year old laptop and teh battery is at 58%. Explains a lot 😅 Never knew this existed. fingers crossed 🤞
  1. Dev Tanaka
    @devt725

    long time lurker first post lol found the coolest built-in Windows tool. powercfg /batteryreport /output "C:\temp\battery.html" writes a detailed battery report wherever you like. it has reecnt usage, battery drain over the last few days, and a life estimate at full charge versus at design capacity.

    theres also powercfg /energy which watches teh system for a minute and reports power efficiency problems... why is this buried in a command and not in Settings? pls help 🙏

    RAM prices doing their own thing again smh

    1
  2. Elif K.
    @elif.kim

    hmmmm quick q does the report show a cycle count for your btatery? ?

    RAM prices doing their own thing again smh

    13 0 helpful
  3. Tariq Celik
    @quartz_smith

    @devt725 works on paper, not in real life

    3 0 helpful
  5. Kofi
    @solidmonk

    ok so cycle count isn't always populated. Some batteries don't report it to Windows, so a blank field doesn't mean anything is wrong. lmk how it goes

    6 0 helpful
  6. Rhea W.
    @rhea.walsh
    in reply to @solidmonk

    been there man pro tip: write down what u change... i didnt and had to redo battery from scratch.. xD which version are u on?? good luck man!

    4 1 helpful
  7. Elif K.
    @elif.kim

    ok so came here to say exactly this

    0 2 helpful
  8. Jade
    @jadej747

    hmmm capacity etsimates come from the batterys own controller. theyre a good guide, not a lab measurement, so look at the trend over time.

    0 0 helpful
  9. Kofi
    @solidmonk

    ok so powercfg /sleepstudy is great on laptops with Modern Standby... it shows what drained teh battery while the lid was closed. worked for me anyway 🤷

    2 2 helpful
  10. Kofi
    @solidmonk
    Accepted solution

    hmmm ran it on my 4-year-old laptop and teh battery is at 58%. Explains a lot 😅 Never knew this existed. fingers crossed 🤞

    8 4 helpful
  11. Rowan Sato
    @rowan_cache

    wait what don't panic about the number. lithium batteries losing 20-30% over a few years is normal wear, not a defect.

    1 1 helpful

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