When I bought my MP 3 500 in Louisville several weeks ago, I had the dealer install a BMW power socket (they also specialize in Beemers). I was told I could simply plug in a vest with a BMW connector or maintain the battery without removing it with a battery tender. Well, I don't have the vest, but I did pick-up the BMW plug-in charging system unit. I haven't actually tried it out though, because I noticed a little note on the packaging when I got home that says "BMW motorcycles and earlier charge through the auxiliary power plug. Remove battery from 2005 and later BMW motorcycles." So, do I go ahead and plug it in, or do I need to remove the battery? I ask because once I open the package I may not get a refund.
RJ