I have bought a new pressure washer, foam canon, three wash buckets and grit gaurds, wash mits, iron remover, lots of micro fiber towels, clay bars, glazes, waxes and a small fortune in other products. My birthday is next month, so I'll buy myself the battery charge system posted above from Amazon. We are getting PEC ATL delivery and I have considered asking them to not clean it so the paint does not have swirls. I may need to buy myself a RO polisher but I know me and I have to wonder if I'll be so particular after a year. The batter care system is a definite must if there is that much drain. I have let my Tahoe sit for a month and it starts. It is also a 2007 so it does not have so many electronics draining it. I'm sure a Porsche battery replacement is north of $500.