So, we're on the road. As I'm writing this, it's 7.30 in the morning. Today is Monday, and it's a public holiday here in South Australia. C and I left home on Friday afternoon, and decided to drive to the Adelaide Hills to stay overnight with my parents for Friday and Saturday nights. However, on arrival in the Adelaide Hills, we discovered our leisure batteries were depleted, and the 12 volt system was not operating. This is a serious issue because the frid...