Leaving chargers plugged in all the time does create small but real risks, especially over years of continuous use. The tiny amount of power they draw turns into heat, which gradually stresses internal parts like capacitors, solder joints, and insulation. With quality, certified chargers in good condition, this wear is slow and usually uneventful, but in cheap, counterfeit, or already damaged units, that accumulated stress can lead to abnormal behavior or outright failure.

The safest routine is simple: unplug chargers when you do not need them, especially if they feel unusually hot, smell odd, or make buzzing or crackling sounds. Use only reputable, certified products that match your device’s specifications, and avoid overloading power strips or using frayed cables. Keeping chargers away from bedding, paper piles, and other flammable materials further reduces fire risk, turning a quiet everyday habit into a more controlled and deliberate practice.