It burns batteries.
1. Because the output current of the 66-watt car charger is relatively large, and the voltage after the discharge of the car battery is also relatively low, if the internal design of the charger is unreasonable or the use is not appropriate, it will cause excessive voltage, overcharge, overheating and other hazards to the battery, resulting in short circuit and burning of the battery.
2. If the user uses the car charger for a long time, such as excessive charging, it will cause an electrochemical reaction to the battery and shorten the life of the battery, resulting in the battery burning.
Therefore, it is necessary to pay attention to the charging time and charging current when using the car charger, so as not to cause damage to the battery.
Depending on how much capacity you charge the battery, if the battery matches the wattage of the charger, it will not burn out