Submitted by Scwins on July 17, 2012
When I spoke to a regional manage for the west about Supercharging he made it clear this is not the sort of thing you would do a lot. It has a somewhat substantial effect on the battery's lifespan. He mentioned you might do it 3-4 times a year. Anything more and prolonged would definitely affect battery life.
So, he believed that Supercharging would be a per use charge since it's not expected to be something owners do often.