It’s perfectly normal for your smartphone charger to get a little warm while your device is charging. But it shouldn’t get so hot that it’s uncomfortable to touch. This is a sign that there’s something wrong—and it’s important to fix the issue ASAP.
An overheating charger might reduce the lifespan of your phone battery and other components. Though the risk of a hot charger becoming a fire hazard is small, it’s also worth bearing in mind. TCL looks at some of the common reasons for overheating chargers and what you can do about it.
1. Incompatible or unofficial charger
One of the most common reasons for a charger to overheat is that you’re not using the right charger or cable for your device. Chargers made for your phone are designed to provide the exact amount of power required. But incompatible or unofficial phone chargers are not. Cheap, unofficial chargers are especially prone to overheating.
2. Faulty charger
It’s rare for chargers to break or ship with a fault, but it happens. A defect in the charger might mean that it can’t handle the power or voltage flowing through it, causing overheating. Defects are more likely in older chargers due to wear and tear.
3. Damaged cable
If your cable is damaged, it might cause the charger to overheat. Sometimes, the damage will be visible in the form of exposed wires or tears in the plastic casing. You can test the charger with another cable to see if it still overheats.
4. Charging in a hot environment
Don’t be surprised if your charger runs hot if you leave it in direct sunlight on a hot summer’s day while you change your phone.
5. Prolonged charging
Leaving your phone on to charge all day or overnight could lead to your charger overheating. Constantly overcharging your phone could also eventually damage the battery.
Preventing overheating chargers
Avoiding an overheating charger is usually as simple as using the officially recommended charger for the make and model of your smartphone. It’s also wise to not overcharge your phone and avoid wiggling or bending cables.
Always making sure your charger is in good condition, keeping charging points and cable connections clean, and using your charger in a cool, well-ventilated area will all help to prevent overheating.