Smartphone charger overheating risks highlighted

Excessive heat from smartphone chargers can signal serious problems rather than normal operation. Experts note that while some warmth is expected due to the Joule effect, temperatures that cause burns, melt plastic, or emit unusual odors often indicate faulty hardware, low‑quality counterfeit adapters, damaged cables, loose wall sockets, or inadequate ventilation.

High‑power fast‑charging units (30 W, 65 W or more) generate more heat than standard chargers, increasing the risk when used on soft surfaces such as beds or carpets, or in hot environments like cars under direct sunlight. Overheating may lead to battery degradation, short‑circuits, or fire hazards. To mitigate danger, specialists advise using only original or certified chargers, keeping devices on hard, flat surfaces, ensuring proper airflow, disabling fast‑charge modes when not needed, unplugging chargers when not in use, and replacing any charger that shows discoloration, deformation, strange noises, sparks, or persistent heat. Updating phone software can also improve power‑management efficiency.