An emergency call (E-call) system comprises two battery banks (100a, 100b) with a parallel connection switch (200) between them, and a temperature data acquisition controller (300). If the temperature is above a predetermined reference temperature, e.g. 0...

An improved handheld electronic device in conjunction with an improved holder for the handheld electronic device together form an improved electronic device. The handheld electronic device includes a first battery, and the holder includes a second battery ...