A method and apparatus maintain the temperature of a automobile battery within a predetermined temperature range even though the ambient temperature is outside of the predetermined temperature range. The apparatus and the method utilize a thermoelectric device that provides lower temperatures on one surface and higher temperature on another surface thereof in response to the direction of an electrical current passing through the device. The thermoelectric device is thermally coupled by a fan, air ducts and a heat transfer structure between the automobile battery and the ambient atmosphere. An electrical circuit having a heat sensor is thermally coupled to the automobile battery and selectively controls the current through the thermoelectric device to maintain the temperature of the automobile battery within the predetermined temperature range.