rider1520
Well-known member
I just received a Garmin RV 770 and when I try to charge it inside the house I get a message that reads ?the attached cable can not currently charge your device. Garmin tech support states that is normal and that the unit essentially can only be charged using inside a vehicle using the 12 volt charger. to those of you that own one is that what you find? Can the device ONLY be charged from a vehicle?