emit.  In this case, you are wrong!  Mostly electric battery powered, from what I know.  Of course there are exceptions, for more heavily powered ones.  I am thinking of those regularly used on the golf course, and in my local case, many people that drive their golf courts to the golf course.  They charge 'em in their garages  I am sure I am correct on this one, and that was why I asked the question.  Thanks for the response,

T.K.