CHARGING METHOD FOR BATTERY, AND BATTERY AND ELECTRICAL ENERGY DEVICE

The present application discloses a battery charging method, a battery, and an electrical device. The charging method includes: during charging of a battery, upon determining that a state of charge (SOC) of the battery reaches a first SOC range, adjusting a charge rate of the battery down to a second charge rate from a first charge rate within a range from a minimum boundary value of the first SOC range to a first set SOC, and adjusting the charge rate of the battery up to the first charge rate or a third charge rate from the second charge rate within a range from the first set SOC to a maximum boundary value of the first SOC range. In the present application, when the SOC is close to the first set SOC in the first SOC range, the battery is charged at a low charge rate, which reduces the expansion force of the battery, and thus prolongs the service life of the battery.