The cigarette lighter socket in a car has long been used to charge smartphones and other gadgets. However, an auto electrician warned that this is dangerous and can damage both the electronics and the car itself.
The 12V socket is originally designed for short-term operation with heating elements; the voltage in it is not stably maintained. Current surges when the engine speed changes can accelerate the wear of the phone's battery and even cause it to detonate.
Using splitters exacerbates the problem; short circuits, blown fuses, and the risk of fire become a real threat. Some drivers have tried to bypass the system by installing higher-power fuses or dummies, but this is fraught with serious consequences for the wiring.
The cigarette lighter can be used briefly, for example, for a car vacuum cleaner or compressor, preferably with the engine off. It is important to have a cover or plug so that metal objects do not get inside. Modern cars have separate USB connectors for gadgets; these should be used for safe charging.
