Laptop battery life on Windows: make it last longer

Steps

1. 01

   Find what is draining it

   • Windows 11:Settings›System›Power & battery›Battery usage, then read 'Battery usage per app'
   • For an app high on the list that you don't need running unseen: More options (…) → Manage background activity → set 'Let this app run in the background' to Never — only some apps offer this
   • Windows 10: Settings → System → Battery → 'See which apps are affecting your battery life'

   ✓You should see: An app you weren't using sitting near the top — that's the drain, and it's usually fixable without touching the battery.

   Also see: CPU at 100% on Windows? Find the culprit in Task Manager

2. 02

   Turn on Energy saver earlier

   Windows 11 24H2 or later

   • Settings → System → Power & battery → expand Energy saver → raise 'Turn energy saver on when battery level is at', or set 'Always use energy saver' to On
   • Quick toggle: select the Battery icon in the taskbar → Energy saver

   Earlier Windows 11

   • Settings → System → Power & battery → Battery saver → set the level it turns on at, or select Turn on now

   Windows 10

   • Settings → System → Battery → set 'Turn battery saver on automatically if my battery falls below:'

   Why?

   Energy saver replaced Battery saver in Windows 11 24H2. Microsoft says it dims the screen and limits background activity, so setting it to start at 30 or 40 percent instead of the default buys runtime on a long day.

3. 03

   Apply Windows' own energy recommendations

   • Windows 11:Settings›System›Power & battery›Energy recommendations›Apply all, or change the items one by one
   • On the same page, set Power mode to a more efficient option such as Best power efficiency — not every PC shows this
   • Windows 10: select the Battery icon in the taskbar and move the slider toward Best battery life

   Why?

   Best performance does the opposite: Microsoft warns it raises power use and heat, so keep it for plugged-in work.

   Also see: Switch the power plan to Best Performance

4. 04

   Spend less power on the screen

   • Settings›System›Power & battery›Screen and sleep: shorten 'On battery power, turn off my screen after' and 'On battery power, put my device to sleep after' (Windows 10:System›Power & sleep)
   • Settings›System›Display: lower the brightness, then Advanced display → 'Choose a refresh rate' and pick a lower rate
   • Settings → Apps → Video playback → Battery options → 'Optimize for battery life'
   • A dark theme helps too:Settings›Personalization›Themes

   Why?

   Newer Windows 11 builds name the first page 'Screen, sleep & hibernate timeouts'; the settings inside are the same.

5. 05

   Look after the battery, and check its health

   • Don't use or charge the laptop somewhere hot — Microsoft says heat permanently reduces lithium-ion capacity — and keep it between roughly 20 and 80 percent when you can
   • A heart on the Battery icon means Smart charging is on: the maker has lowered the charge ceiling on purpose, and Microsoft points to the maker's website for how to turn it off
   • Open Command Prompt as administrator, run powercfg /batteryreport, then open the HTML file at the path it prints
   • Under Installed batteries, compare DESIGN CAPACITY with FULL CHARGE CAPACITY

   ✓You should see: Full charge capacity well below design capacity means the battery is worn — no setting brings that back.

   !Careful: A battery that has swollen or pushes the case apart is a hazard: stop using the laptop, don't press or puncture it, and get it replaced.

   Also see: Laptop plugged in but not charging on Windows