I was wondering if somebody could help me out with a question. I just bought my Spark about a month ago, and I’m wondering how to best maintain the battery life in the heat. I live and work in Phoenix, AZ, and luckily I park my car in a garage at home and at work. However, I noticed that the manual recommends keeping the car plugged in at temperature is over 90°, which is basically half the year here in Phoenix. I can’t keep my car plugged in at work. I am wondering how long is too long to keep the car unplugged. I obviously want to maintain the battery for as long as possible. Any informatio