An electronic device is provided. The electronic device includes a charger, a first battery pack electrically connected to the charger through a first path, a second battery pack electrically connected to the charger through a second path having a higher impedance than the first path, and a processor electrically connected to the charger, the first battery pack, and the second battery pack. The processor is configured to activate a constant current function of a first load switch included in the first battery pack when a first condition is satisfied, and to allow the charger to decrease an output current of the charger until the constant current function of the first load switch is deactivated.