Abstract: A battery charging method includes during charging of a battery, upon determining that a state of charge (SOC) of the battery reaches an SOC range, adjusting, within a range from a minimum boundary value of the SOC range to a set SOC, a charge rate of the battery from a first charge rate down to a second charge rate; and adjusting, within a range from the set SOC to a maximum boundary value of the first SOC range, the charge rate of the battery from the second charge rate up to the first charge rate or a third charge rate.