POWER MANAGEMENT SYSTEM AND POWER MANAGEMENT METHOD

A power management system and a power management method that are adapted to an electronic device are provided. The power management system includes an alternative current power supply, a first battery, a first charger, a second battery, a second charger, and a control circuit. The control circuit is electrically connected to the first charger and the second charger. The control circuit is configured to detect capacities of the first battery and the second battery, to set a first system power of the first charger as a first rated power, and to set a second system power of the second charger to be less than the first rated power. The control circuit enables a turbo boost mode of the first charger and disables a turbo boost mode of the second charger.