Abstract: The present invention relates to a battery pack equipped with a detachable rechargeable battery and a portable electronic device equipped with the battery pack. The battery pack (10) is continuously used by replacing the rechargeable battery (20) rather than replacing an entire battery pack (10) when the life span of the battery pack (10) adopting the charging solar cells (30) expires, and thus, the battery pack (10) must be replaced, and can quickly charge the rechargeable battery (20) through the charging solar cells (30) by preventing the rechargeable battery (20) from being overcharged.

Abstract: A mobile terminal with a solar cell is disclosed. The mobile terminal has a main body, a battery and a flip cover. A receiver portion, a data display and a keypad are formed on the upper surface of the main body. The improvement comprises a solar cell attached to the outer surface of the flip cover to be exposed to the outside. According to the present invention, there is provided the mobile terminal having a solar cell, which is capable of providing sufficient electric power to the mobile terminal while the mobile terminal is positioned in a normal state where the upper surface of the mobile terminal is directed upward.