Well, Andy turns out I've had interesting discussions with people such as engineers at Ausnet and others who are VERY sceptical about the current infatuation with lithium batteries. They are a mature technology and are about at their theoretical limits already. Large scale batteries for dispatchable power are especially problematic. Huge cost for tiny amounts of energy. Look up the specs. for Musks battery in S.A. A joke.
Oh, and best not to make too many assumptions about the people you are talking to. Some of us have qualifications outside aviation. Sometimes "nay-saying" is just a touch of realism. Why dont you put your money where your mouth is and stump up some cash for one of these miraculous endeavours and see how you go?