How to speed up a slow MacBook: storage, battery, and updates

Danny Weber

15:00 16-12-2025

© A. Krivonosov

Is your MacBook slowing down? Free disk space, check battery health, use Activity Monitor, trim startup items, and keep macOS updated to restore performance.

Many MacBook owners eventually notice their laptop feels slower. Apps take longer to launch, the system hesitates, and the fans grow louder than usual. More often than not, the issue isn’t the device “getting old” or a reason to rush out for a new Mac—it’s the build‑up of files, background tasks, and less‑than‑ideal settings. The good news is that in most cases you can restore a lot of performance on your own. Pepelats News outlines how to give your Mac a lift.

Free space is the backbone of stable performance

An overstuffed drive is one of the main reasons macOS slows down. When the disk is nearly full, the system lacks room for temporary files, caches, and smooth app operation. You can check the situation in About This Mac, which shows a storage breakdown. macOS also points out which files take up the most space and offers to remove what you don’t need, empty the Trash, or move data to iCloud or an external drive. It also helps to clear browser caches and tidy up the Downloads folder from time to time. Freeing even 10–20 percent of the disk often produces a visible speed bump.

Battery health has a direct impact on speed

Few people realize that a worn‑out battery can drag down a MacBook’s performance. When the battery is weak, the system automatically limits power to stretch battery life. In battery settings, it’s worth enabling optimized charging and keeping an eye on apps that consume a lot of energy. If the laptop spends most of its time on the charger, it’s useful to unplug occasionally after a full charge and make sure the device doesn’t overheat. A healthy battery keeps performance steady and prevents sudden slowdowns.

Keep apps in check with Activity Monitor

A single heavy process can slow the whole machine. The built‑in Activity Monitor shows which apps tax the CPU, occupy memory, or guzzle energy. If something sits at the top of the list and you don’t actually need it, closing or uninstalling it is the simplest fix. A quick periodic audit helps avoid those moments when the MacBook starts lagging for no obvious reason.

macOS updates are about more than new features

System updates are often associated with new capabilities, but bug fixes and performance optimizations matter just as much. An outdated macOS can run slower and work worse with current apps. Installing updates regularly boosts stability and security and often benefits speed, especially on recent models.

Trim startup items for a faster launch

The more programs that launch with the system, the longer a MacBook takes to boot—and the more resources get swallowed right away. In account settings, you can review login items and remove anything you don’t need. After that, the notebook starts faster and doesn’t waste resources on background apps you won’t use at the outset.

When an upgrade isn’t necessary

In most cases, MacBook slowdowns have less to do with aging hardware and more with accumulated system clutter. Cleaning up storage, managing applications, keeping an eye on the battery, and running the current version of macOS can breathe new life into the laptop. None of this requires special skills or a trip to a service center—it’s within reach for any user. After this kind of routine maintenance, the urge to buy a new MacBook often fades on its own.