How to Make Your Laptop Battery Last Longer: Daily Tips and Long-Term Care

By Ammar Aslam · Updated September 20, 2026 · 8 min read

A laptop is only truly portable if its battery lasts. Yet many people find their laptop dying before lunch, or notice that a battery which once lasted all day now barely manages a few hours. Two different things are going on here: how much power you use each day, and how healthy the battery is over the long term.

This guide covers both. The first half shows you how to squeeze more time out of every charge. The second half explains how to slow down battery wear so your laptop stays useful for longer.

Part 1: Get more hours from every charge

1. Lower your screen brightness

The display is usually the single biggest power drain. Dropping brightness from 100% to around 50–60% can add a surprising amount of battery life, and indoors you will rarely notice the difference. Turn on adaptive or automatic brightness if your laptop supports it.

2. Use battery saver mode

On Windows 11, open Settings → System → Power & battery, set the power mode to Best power efficiency, and set Energy saver to turn on automatically at 20–30%. On a Mac, go to System Settings → Battery and turn on Low Power Mode when you need extra time.

3. Close apps you are not using

Apps running in the background still use processor time and memory, which drains the battery. On Windows, check Settings → System → Power & battery → Battery usage to see which apps use the most power. On a Mac, open Activity Monitor and look at the Energy tab.

4. Be smart about your browser

Dozens of open tabs, especially ones playing video or running heavy websites, are a major battery drain. Close tabs you do not need and enable your browser's efficiency or energy saver setting, which puts background tabs to sleep.

5. Turn off what you do not need

Switch off Bluetooth if you are not using wireless accessories.
Turn off keyboard backlighting in bright rooms.
Unplug USB devices such as external drives when not in use; they draw power from the laptop.
Use airplane mode if you are working offline, such as writing on a flight.

6. Use dark mode on OLED screens

If your laptop has an OLED display, dark mode genuinely saves power because black pixels are switched off. On regular LCD screens the savings are minimal, although many people still find dark mode more comfortable.

7. Keep your system updated

Operating system and driver updates often include power management improvements. Keep Windows or macOS and your laptop maker's drivers up to date.

8. Choose sleep wisely

Set your laptop to turn off the screen after a few minutes of inactivity and to sleep shortly after. Short sleep timers prevent battery waste when you step away and forget to close the lid.

Part 2: Keep your battery healthy for years

Laptop batteries are lithium-ion, and every lithium-ion battery slowly loses capacity with age and use. You cannot stop this completely, but good habits slow it down considerably.

Avoid extreme heat

Heat is the biggest enemy of battery health. Do not leave your laptop in a hot car or in direct sun, and do not use it on soft surfaces like beds or pillows that block the air vents. Clean dusty vents occasionally so the fan can keep the laptop cool.

Avoid sitting at 100% all the time

Keeping a battery full and plugged in constantly, especially while warm, speeds up wear. Many laptops now include a setting to limit charging to around 80%:

Mac: Optimized Battery Charging is on by default and learns your routine.
Windows laptops: brands such as Dell, Lenovo, HP, ASUS and Samsung offer a charge limit or "battery care" option in their own utility apps.

If you mostly use your laptop at a desk, turning this on is one of the best things you can do for long-term battery health.

Avoid running to 0% regularly

Modern batteries do not need to be fully drained. In fact, frequently running them completely flat adds stress. Charging whenever it is convenient, ideally keeping the battery roughly between 20% and 80%, is perfectly fine.

Use a good charger

Use the charger that came with your laptop or a quality replacement with the correct wattage. Cheap, uncertified chargers may deliver unstable power.

How to check your battery health

Windows: open Terminal or Command Prompt and run powercfg /batteryreport. It creates an HTML report showing the battery's original design capacity and its current full-charge capacity.

Mac: go to System Settings → Battery and click the info button next to Battery Health to see the maximum capacity.

If capacity has fallen well below 80% of the original and battery life no longer meets your needs, replacing the battery is often much cheaper than buying a new laptop.

Quick summary: lower brightness, use battery saver, close unused apps and tabs for longer daily life. Keep the laptop cool and enable an 80% charge limit for a longer battery lifespan.

Frequently asked questions

Is it bad to leave my laptop plugged in all the time?

Modern laptops stop charging when full, so it is not dangerous. However, sitting at 100% while warm speeds up battery wear, so use a charge-limit feature if available.

Should I remove the battery when using the laptop on power?

Most modern laptops have built-in batteries that should not be removed. Use the charge limit setting instead.

Ammar Aslam
Ammar writes clear, practical tech guides that help everyday users fix problems, stay safe online and get more from their devices.