Why does my laptop battery drain so fast?

Your laptop battery drains fast because of a mix of high power use, battery wear, and heat. The most common causes are:

• High brightness or high refresh rate: Displays use a lot of power.
• Too many apps or tabs running: Browsers, cloud sync, and video calls keep the CPU busy.
• An aging battery: After a few years, lithium-ion batteries hold less charge.
• USB devices, Wi‑Fi, and Bluetooth: These can add steady drain.
• Heat and blocked vents: A hot laptop works less efficiently.
• Power settings or driver issues: Performance mode and outdated software can waste battery.

Quick fixes:

• Lower screen brightness and use 60Hz on battery.
• Close unused apps and disable startup programs.
• Check battery health in Windows or Mac settings.
• Unplug accessories when not needed.
• Keep vents clear and use the laptop on a hard surface.
• Switch to battery saver or balanced mode and update your system.

If the battery is swollen or bulging, stop using the laptop and get it checked right away.