Samsung Electronics Co., Ltd.

Hyun-Yil Kim

Ki-Ho Cho

Disclosed is a method for measuring a battery charge level of a portable terminal having a removable back-up battery. The method includes determining that the back-up battery is connected in parallel to an main battery of the portable terminal, disconnecting the main battery from the back-up battery for a period of time in a cycle, and checking voltage levels of the main battery and the back-up battery to measure a charge level of each battery while the batteries are disconnected.

Apparatus and method for measuring battery charge level of portable terminal

A method for sensing detachment of a external battery in a portable terminal including a connector with which the external battery is detachably assembled includes determining that the external battery is assembled with the connector when an output voltage is observed, connecting the connector and an internal battery of the portable terminal to supply power from the external battery to the internal battery, disconnecting the connector from the internal battery to check an output voltage of the connector, and determining that the external battery has been detached from the connector when an output voltage is not observed.

Growing community of inventors

Gumi-si, South Korea

Hyun-Yil Kim