Wondering if the people who live in hot climates (Phoenix, Tucson, Las Vegas, Death Valley, etc) can tell me how long their factory installed Subaru battery lasted them. I have a 2010 Outback that is driven almost every day in Tucson, Arizona. It has 26,000 miles on it. The Outback is my wife's car and I do not want her to be stranded with a sudden dead battery (which is frequently how they fail in hot climates...without any real warning). I would rather spend the money for a new battery than to have my wife stranded. So, how long has your factory battery lasted you? Please, only those who life in hot climates.