Hello, does anyone know any ideal storage places for batteries? I've been leaving them on 50% battery when stored in the case. Where do you guys keep yours?

In a cool, dry place.  You can get storage bags for LiPo batteries,  for example:   https://hobbyking.com/en_us/batt ... w.ds&___store=en_us

Hello. I appreciate your time bringing this query to us. You can actually check on our official website for some guidelines on how to store batteries safely: https://www.dji.com/phantom-4-adv/info#downloads