1. It still uses a small amount of electricity
Even when nothing is connected, most chargers draw a tiny amount of “standby” power. For modern chargers, this is usually very small—often well under 1 watt—so the cost over a year is typically minimal.
2. It can wear out over time
A charger that’s continuously powered is exposed to heat, power surges, and normal component aging. While good-quality chargers are designed for this, unplugging them when not in use may slightly extend their lifespan.
3. It can pose a safety risk if the charger is damaged or poor quality
The biggest concern isn’t that a charger is plugged in—it’s using a damaged, counterfeit, or poorly made charger. Cracked casings, frayed cables, or uncertified chargers are more likely to overheat or fail. Power surges, liquid exposure, or placing chargers under bedding can also increase fire risk.
Good charging habits
- Use chargers from reputable manufacturers or certified replacements.
- Replace chargers with damaged cables or cracked housings.
- Keep chargers dry and well ventilated.
- Unplug chargers if you’re leaving for an extended period or during severe electrical storms if recommended in your area.
- Avoid covering chargers with blankets, pillows, or clothing while they’re in use.
Bottom line
The claim “Never leave a charger in an outlet without your phone” is overstated. A modern, certified charger plugged into a properly functioning outlet typically consumes very little power and is designed to remain plugged in safely. The more important safety practices are using quality chargers, inspecting them for damage, and avoiding overheating or misuse.
