sure, but you'd have to route a pretty heavy cable from the battery to under the hood. wouldn't it be easier to put a pigtail under the rear seat that you could pull out to connect to, or do you need it for a maintainer? maybe someone knows of a 12v source under the hood.
I had an old 2012 C; I thought there was a clip point after removing the fuse-box cover on the drivers side. I think is was a skinny silver tab, not wide enough for a standard battery jumper cable clamp - but I do remember it being there. https://www.aa1car.com/library/prius_jump_start.jpg
