You are the cutest electric car family there is! I just found your conversion videos on youtube and linked to your site here.
From what I gather, you live in the northern climes (Maine). I feel your pain with battery power loss. I constantly dealt with that when I lived in syracuse ny, bringing my battery in every night which is a bit problematic with multiple batteries.
With the heating system and your windows, especially with the type of weather you get up there, I thought that maybe you could create a heating-element like the bands across rear-windows, that could defrost your windscreen.
Just a thought.
Keep up the good work. Enjoy your vehicle nd thanks for the videos. I laughed when you commented about “looking for a Prius” on your test-drive.