I just booked Hilton Newark Indoor parking which PlugShare says they has 110v outlets. Very close to terminals and shuttle every 20mins. It is about $8-$10/day depending on what website. I used www.way.com because it was the best price at the time of booking. Note that there are cheaper Outdoor and Rooftop parking but I don't think these have outlets. I hope to have keep it 80% charged despite vampire drain from cold temps and sentry mode on. I will report back once I come back from my 30 day Dec/Jan trip.