This looks like a clickbait-style headline. The claim that you should never leave a charger plugged in without your phone is more nuanced.
The three common reasons people give are:
- Small energy use (“phantom” or standby power)
A charger left plugged in may still draw a tiny amount of electricity even when no phone is connected. For a single modern charger, this is usually very small. - Heat and component wear
Low-quality, damaged, or very old chargers can sometimes overheat or fail. Leaving any electrical device continuously connected increases the time it is exposed to possible faults. - Safety risks from faulty chargers or wiring
Poor-quality chargers, damaged cables, overloaded outlets, or electrical problems can create risks such as overheating or, in rare cases, fire.
For a good-quality, certified charger in good condition, leaving it plugged in occasionally is generally not considered a major danger. However, unplugging chargers when not in use can reduce clutter, save a small amount of energy, and remove a potential risk—especially if the charger is cheap, damaged, or left in a hot or damp place.
