Most people think an empty charger is harmless, but its internal components are still alive as long as it’s plugged in. Even without a phone attached, a transformer and capacitors continue drawing a small current, slowly heating up and degrading over time. That wear makes them more vulnerable to voltage spikes, short circuits, and internal failure that can lead to melting plastic, smoke, or, in the worst cases, fire.

There is also a human side to this risk. A dangling cable from a live charger is an irresistible toy for a curious child or pet. Teeth, fingers, or wet hands can turn a simple tug into an electric shock. Unplugging chargers when not in use cuts wasted energy, reduces fire risk, and keeps your home safer for the people and animals you love.