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01 Reader

Battery Report Reader

See how worn your laptop's battery is from the report your own laptop makes. The report is read in this browser and never uploaded.

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1 Make the report

Windows 10 and 11

  1. Open the Start menu, type cmd and open Command Prompt.
  2. Type powercfg /batteryreport and press Enter.
  3. It says where it saved battery-report.html (usually your user folder).

Mac

  1. Hold the Option key and click the Apple menu.
  2. Choose System Information, then Power under Hardware.
  3. Select the text under Battery Information and copy it.

Linux

  1. Open a terminal.
  2. Run upower -i $(upower -e | grep BAT)
  3. Copy the output.

3 Check the numbers

Or, when only a percentage is shown (Mac "Maximum Capacity", Linux "capacity"):

Rated cycles: Apple lists 1,000 for recent Mac laptops (see Sources); other makers publish it in the battery or warranty details, if at all.