Leaving chargers plugged in after use might seem okay, but it can cause problems. Even when not in use, chargers still use a bit of power. 

This can make them overheat and wear out faster. In extreme cases, an overheated charger could smoke or start a fire, especially if there’s a sudden voltage change.

Leaving chargers plugged in can be dangerous, especially if you have young children or pets. Exposed cords can cause electric shocks, so it’s important to unplug chargers when not in use to keep everyone safe.