Hello I would like to operate a Navi on my scooter Gilera Runner FXR for the holiday. I have already bought the Tomtom one for sale. after I have thought up a hold, the question arises for me about a suitable power supply. USB socket or 12 volt can? How high should the charging current be? 2 Ah? Or 1 Ah? With a USB socket the clunky 12 volt plug is omitted, which I feel pleasant. Can one connect such a can easily to the battery? a separate fuse? If so, how strong should it be? Then, of course, I need a smart place where I could mount the can. The navigator is mounted on the left mirror mounting screw. Short ways to the can would be advantageous for otic reasons. Suggestions? Inspirations? Ideas? Greeting Michael