StsOfFire,
Here's my solution to keep 4 motorcycles and my Vette and/or the X5
fully charged:
Battery Tender. A nearly identical model is also avail. at the Stlr;
that model, from memory, has a Roundel and a cig lighter plug in.
It's a few bucks more.
One of my Batt Tenders is 16 yrs old and one is a year old: both
work like Rolexes...actually, better than my Rolex, lol!
GL,mD
http://batterytender.com/product_info.php?products_id=2