Abstract: In a number of embodiments, mathematical certainty and confidence to the prediction of battery failure due to a predicted future temperature drop is provided. A connected service may be used by a vehicle to obtain an accurate temperature forecast that will help predict a discrepancy between needed and available cold cranking amps to start a vehicle engine. If a determination is made, based at least upon a temperature forecast and battery health, that the battery will yield insufficient cranking amps to start a vehicle engine in the near future and may not be sufficiently rechargeable, a recommendation that the battery be replaced may be made in advance of the battery's end of life.