Has anyone replaced their under-hood battery with a high quality AGM battery? When I look online for 2016/2017 Transit Connect batteries it doesn't seem like anyone lists them, maybe the size is weird? I have an ARB Portable Fridge Freezer I'd like to run for short trips and I'd feel better with an AGM battery. At this point I don't want to add another battery, just upgrade the under-hood battery. If anyone has, what make and model? Thanks, Tom