That headline is partly true but exaggerated. Leaving a modern phone charger plugged into an outlet without a phone connected is generally not an immediate danger, provided the charger is genuine, undamaged, and meets appropriate safety standards. However, there are good reasons not to leave chargers plugged in unnecessarily.
3 main reasons
- It still consumes a small amount of electricity
A charger that’s plugged in but not charging usually draws a tiny amount of standby power. For one charger, this is generally very small, but unnecessary consumption adds up across many devices. - Heat and component aging
Chargers contain electronic components that can warm slightly while connected to power. Continuous operation can contribute to component aging. A quality charger is designed for this, but damaged or poorly made chargers are a different matter. - Faults can create a safety hazard
The bigger concern isn’t simply that a charger is plugged in—it’s damage or poor quality. Frayed cables, cracked casings, loose plugs, counterfeit chargers, or overloaded outlets can increase the risk of overheating, electrical shock, or fire.
What should you do?
You don’t need to panic if you’ve occasionally left a good charger plugged in. But it’s sensible to unplug chargers when they’re not needed, particularly if they are damaged, unusually hot, making noises, or are connected to an unreliable outlet.
And never cover a charger while it’s operating or use a visibly damaged charger.
