Abstract: A method for protecting a battery of an electronic device including a plurality of batteries, includes: measuring a total current (Itotal) value output from a charging module while the plurality of batteries are charged via the charging module; detecting a first current (I1) value output to a first battery via a current limiter; calculating a difference between the total current (Itotal) value and the first current (I1) value to estimate a second current (I2) value transferred to a second battery without passing through any current limiter, where the first battery and the second battery are included in the plurality of batteries; and controlling, based on the estimated second current (I2) value, a current of the second battery, which has the second current (I2) value, by controlling opening/closing of a switching module included in a protection circuit module of the second battery.

Abstract: According to various embodiments of the disclosure, a battery may include a battery case has a ring shape, which includes a plurality of spaces physically separated by a plurality of partition walls, and an electrode assembly having a structure formed by stacking a plurality of electrode plates received in at least one space of the plurality of spaces of the battery case, wherein the electrode assembly may include electrode tabs, each of which is drawn out through at least one of the plurality of partition walls along one surface inside the battery case into another space adjacent to the at least one space in which the electrode assembly is received.

Abstract: A printed circuit board (PCB) having a decoupling capacitor includes: a PCB including a power supply layer, ground layer, and first decoupling capacitor; a package mounted at a surface of the PCB, wherein the first decoupling capacitor is embedded in a via hole of the PCB, and a first electrode of the first decoupling capacitor is connected to one of power supply pins of the package, and a second electrode of the first decoupling capacitor is connected to the ground layer.