I am trying to find a Bluetooth handsfree unit for my hobby car. First of all the number of units available makes selecting a unit a bit confusing. Also since I disconnect the battery when I am not using the car I seem to be having a problem locating a unit that I can charge at home using a standard charger. I have a 110V charger for my iPhone 7 but I am thinking that in order to use it for this application I will need a unit that the iPhone plug will work on. I don't really care to spend a lot on this as it will not be in a car that I use a lot but since handsfree is about to become the only legal way to use a phone in a car in Ga I am thinking this may be a necessity. Your thoughts?