Handheld terminal and power supply device thereof

The utility model discloses a handheld terminal and a power supply device thereof. The power supply device comprises a shell, a battery cell and a power panel which are connected with each other are arranged in the shell, a thermistor used for detecting the environment temperature is arranged on the power panel, and a heating film which is connected with the power panel and used for increasing the temperature of the battery cell is further arranged in the shell, so that the power supply device can work at the proper temperature. And the service time and the service life of the power supply device at low temperature can be prolonged. 本实用新型公开一种手持终端及其供电装置；该供电装置包括外壳，所述外壳内设有相互连接的电芯和电源板，所述电源板上设有用于检测环境温度的热敏电阻，所述外壳内还设有与所述电源板连接用于提高所述电芯温度的加热膜，可使得供电装置在合适的温度下工作，可以提高低温下供电装置的使用时间和使用寿命。