Here are the main facts:
1. It still uses a small amount of electricity
Many modern phone chargers draw a tiny amount of standby power when left plugged in, even with no phone attached. For most newer chargers, this is very small—often less than a watt—so the cost over a year is usually minimal.
2. It can be a safety risk if the charger is damaged or poor quality
A charger that’s:
- Damaged
- Counterfeit
- Poorly made
- Exposed to moisture
can overheat or fail, whether or not a phone is connected. Using chargers that meet recognized safety standards and replacing damaged ones is more important than unplugging a good-quality charger after every use.
3. It may shorten the charger’s lifespan
A charger left plugged in continuously is exposed to heat, power surges, and normal wear over time. While quality chargers are designed for long-term use, unplugging them when they’re not needed can reduce unnecessary wear.
Should you unplug it?
It’s a good habit to unplug a charger if:
- You’ll be away from home for an extended period.
- The charger becomes unusually hot.
- The cable or plug is damaged.
- It’s plugged into an outlet where it could get wet (such as near a sink).
For a modern, certified charger in good condition, leaving it plugged in occasionally is generally considered safe and uses very little electricity. The biggest safety concern is using damaged or low-quality chargers, not simply leaving a charger in the outlet.
