Charging speed is different.
The difference between 240 watts and 120 watts is that the former's charging speed is twice that of the latter, and during the charging process, the former is charged twice as much electricity per unit time as the latter.
The use of car charger needs to pay attention to unplug the car after the car is turned off, some owners may not remember to unplug the car, although the car charger has no current output at the moment, the loss of electricity is not enough to worry about, but for a long time it will still have a certain impact on the car's battery loss, Therefore, it is best to develop the habit of unplugging the car in time after charging.
240w power is 2 times the power of 120w, the difference between 240w and 120w car charger is that the charging current of 240w charger is 2 times that of 120w, and its full battery time is less than half when the battery capacity is the same. Compared with the price, the 240w charger price is only less than 50% higher than the 120w charger, which is more cost-effective.
The difference between the above two chargers: 240w charger has large power, large charging current, fast charging speed, but its price is high. The 120w charger has small power, small charging current, slow charging speed, but low price.