Abstract: Disclosed is a battery preservation device for preventing rapid depletion of battery life of an electronic device. The electronic device includes a heating element. The battery preservation device in the preferred embodiment includes a battery, a charger, a temperature switch, a temperature sensor and a manual switch. In an embodiment, the battery provides power output needed for heat and duration. Further, the battery is placed at a distance from the heating element. The charger regulates the rate that the battery charges and further the charger prevents the battery from overheating. In an embodiment, the temperature switch is programmed to turn on at a pre-defined low temperature and turn off again at a pre-defined high temperature. Further, the temperature switch prevents overheating of the battery. In an embodiment, the temperature sensor is positioned equidistant to the heating element as the battery, the temperature sensor estimates the temperature of the battery.