I am in the middle of designing a battery case for my ebike and printing it. Now my question is: should I add some vents to allow a little airflow. It seems like a good idea when dry but rain is my concern. I was thinking that maybe I could either 1) design a latch that I could push down if it rains or 2) just carry some kind of small cover with me (maybe in the case) that I could put over it in the event of rain. What are your thoughts?