I was checking my Mavic Pro Platinum closely today, and noticed this about the battery contacts. They are uneven. Is this normal? If so, why are they this way? I only have one Mavic, so can't check any others to see if they are all this way. I did a search for "battery contacts" in this forum, but it is tedious to search through all the messages. So I apologize if this was already explained. See attached photo.