For many of us, a laptop spends more time tethered to a charger than roaming freely on battery power. Whether you’re in the middle of long meetings, online classes, or deep-focus work sessions, staying plugged in often feels like the simplest way to avoid battery anxiety. But a question continues to linger: does keeping your laptop connected to power around the clock harm the battery over time? Modern laptops are smarter than ever, yet the chemistry inside their batteries still follows rules that don’t always align with our habits.

A peer-reviewed study published in Physical Chemistry Chemical Physics revealed that lithium-ion batteries—used in nearly all laptops—experience faster ageing when maintained at high charge levels, particularly when heat is involved. That means your day-to-day

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