Rather than carrying car chargers for a phone, MP3 player, GPS, Laptop, etc...the igo charger with interchangable tips seemed like a great idea. So i've got tips for everything but my Magellan Explorist 500. Their website doesn't show any tips specifically for the Explorist500, but out of all their tips, I'm guessing one of them would work, i.e. fit properly, charge the unit without blowing it up! Not being an electrical whiz kid, and hoping for a long shot...I thought I'd see if anyone has found a tip that will work with the explorist, or if anyone has the electrical know-how to decipher from the technical specs which tip might work, safely...anybody...hello...is this thing on...?