What happens to a laptop's power settings when it is running on battery power?

When a laptop is running on battery power, it typically reduces CPU usage to conserve energy and prolong battery life. This adjustment allows the laptop to operate for a longer duration without needing to be plugged in. Lowering the CPU usage can limit the processing power available, which is particularly noticeable in performance-intensive tasks, but it is a common strategy used by operating systems to manage power efficiency.

In power-saving modes, the operating system can adjust various settings, including the processor's speed and performance profiles, to strike a balance between functionality and battery consumption. This enables users to continue using their devices without a constant power source while managing the available resources judiciously.