Hi guys, (this is a great site btw) I was working with another window cleaner for a few months last year and we used his van. He had an old Omnipole system. It had a second car battery in the back of the van driving the pumps. He doesn't have to charge it every night. My new Pure Freedom system has two leisure batteries. And PF aren't the only company that prefers fitting leisure batteries. Why don't they fit standard car batteries? Wouldn't it be less hassle to maintain?