Leaving a charger plugged in:

Keeps internal components energized
Increases heat buildup over time
Raises the risk of short circuits or sparks

Faulty wiring, dust in outlets, or power surges can turn an unattended charger into a real fire hazard—especially overnight or when no one is home.

3. Chargers Wear Out Faster

A charger that’s always plugged in is constantly under electrical stress. Over time, this can:

Break down internal components
Cause the charger to heat up more quickly
Reduce its overall lifespan

That’s why old chargers often feel hot or stop working suddenly. Unplugging them helps extend their life.