The vehicle power supply is a low-voltage product, and there are generally no unsafe factors for the human body.
The \"unsafe\" of vehicle power supply is mainly reflected in the following aspects:
1. High voltage breakdown car charger
The general car battery power supply is 12-24V, the car will have a shock voltage when starting, and the 24V power supply model may instantly produce a voltage of more than 30V. At this time, the car charger of average quality may be damaged because of the instantaneous voltage is too high.
2. The full metal case causes short circuit
The full metal shell of the car charger looks good on the surface of the material, but because of the tolerance of the car cigarette lighter, inserted in the cigarette lighter of some models, it is possible to burn the car insurance because the metal shell is conductive, causing the cigarette lighter to short circuit.
3. Affect the car radio
Some fake and shoddy products will not do the EU CE and the United States FCC electromagnetic compatibility certification, the work will produce more obvious interference signals, affecting the car radio and other audio and video systems work normally.
4. Use inefficient chips
The price is very cheap, the chip performance is poor, the energy conversion rate is very low, most of the electricity is wasted, and the charging speed is very slow.