Electronic device method for controlling charging current for multiple batteries based on sensing resistors

A method performed by an electronic device, the method comprising:

• setting a total charging current for charging a first battery and a second battery to a first value;
• identifying a measurement value of the total charging current through a first sensing resistor electrically connected to the first battery and the second battery;
• identifying a second charging current value for the second battery through the second sensing resistor electrically connected the second battery;
• and
• setting the total charging current to a second value less than the first value, based on identifying a first charging current value being greater than a first reference value or the second charging current value being greater than a second reference value,
• wherein the first charging current value is identified based on the measurement value of the total charging current and the second charging current value.

An electronic device comprising:

• a first battery;
• a second battery;
• an interface power management integrated circuit (IF PMIC) configured to charge the first battery and the second battery;
• a direct current integrated circuit (DC IC);
• a first sensing resistor connected to the IF PMIC;
• a second sensing resistor connected to the DC IC;
• at least one processor configured to control the IF PMIC and the DC IC;
• wherein the first sensing resistor is disposed between the IF PMIC and the first battery, and
• wherein the second sensing resistor is disposed between the first sensing resistor and the second battery.