Fast charging appliances mainly increase the charging voltage, of course, the charging current should also increase. Ordinary mobile phones usually use a 5 volt 2 amp charger, which has doubled the charging current of mobile phones. Now double the charging voltage and the speed will be much faster. At present, the charging voltage has exceeded 20 volts, and the charger current capacity has also increased to more than 3 amps. Mobile phone charger power capacity has reached 66 watts.