In my car, I mounted my SF and am using a USB port charger and OEM cable to charge my SF. When I use Google Navigation, I noticed my battery drains and does not charge or hold the exisitng charge while using NAV. Does anyone know if an actual Car Charger for the SF will charge the SF while using Google NAV. It is quite annoying for the battery drain while plugged in just because I use the NAV. Thanks, Joe!
