I made a mistake yesterday, (one of several, but that's not important:biggrin, I stopped in at the Fashion Island Newport Beach location to get some juice. I forgot to change my amp setting up from the 30 that I use at home up to the 70 that was available. So when I got back to the car I gained half the miles I was counting on. My question is, is there any reason for me to have my amp setting limited to 30? I never charge any lower than that, and if I keep it set at 70, I wouldn't run into the problem that I did.