Get a battery health and energy-efficiency report — via Microsoft Learn

Commandlow riskNeeds adminWindows 11Windows 10

Two built-in reports: the battery report shows design vs. current full-charge capacity (real battery wear) and usage history; the energy report watches the PC for 60 seconds and flags power-wasting drivers, settings and apps.

Takes effect right away

Command

Run in an administrator Command Prompt / Terminal window.

powercfg /batteryreport /output "%USERPROFILE%\Desktop\battery-report.html"
powercfg /energy /output "%USERPROFILE%\Desktop\energy-report.html"

Undo

del "%USERPROFILE%\Desktop\battery-report.html" "%USERPROFILE%\Desktop\energy-report.html"
Close programs and leave the PC idle while /energy runs; add /duration 120 for a longer trace. Both are local HTML files.

Sources

Source reviewed
2026-11-02
Link checked
2026-11-02
Tested hands-on
Not by Oddbyte.Me

Oddbyte.Me hasn't tried this on every Windows build, so keep the undo handy.

battery reportbattery healthenergy reportpowercfglaptop

More in Performance & Power

Check memory pressure, not 'free RAM' — via Apple Support

Tricklow risk

A Mac that shows almost no free memory is usually fine: macOS keeps recently used files cached in RAM so apps reopen faster. The number that matters is the Memory Pressure graph in Activity Monitor, which combines free memory, swap and cached files.