Abstract: A charging method, computer readable medium and vehicle that improve the efficiency of electrical vehicle charging. The efficiency is improved by: obtaining a current voltage of a power battery of the vehicle and a maximum rechargeable voltage of an external charger connected to the vehicle; determining a target voltage of the charging port of the vehicle according to the current voltage, the maximum rechargeable voltage and an electrical characteristic of the Booster of the external charger; determining a target request voltage of the vehicle according to the target voltage of the charging port; and controlling the Booster according to the target request voltage, where the external charger charges the vehicle according to the target request voltage.