<title>Why is my laptop slow when it's on battery?</title>
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<title>Why is my laptop slow when it is on battery?</title>
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<p>Some laptops intentionally slow down when they are running on battery in order to conserve power. The laptop's processor (CPU) switches to a slower speed, and processors use less power when running slower, so the battery should last longer.</p>
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<p>Some laptops intentionally slow down when they are running on battery in
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order to conserve power. The processor (CPU) in the laptop switches to a slower
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speed, and processors use less power when running slower, so the battery should
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last longer.</p>
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<p>This feature is called <em>CPU frequency scaling</em>.</p>