Battery Contacts on Aircraft uneven?

[jimlips]

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.

 

[dirkclod]

Same on my MP.

 

[Broken Arrow]

Yes it is normal, the reason is to connect the post in the right sequence as not to short out the electronics. I believe it's negative first, but can't remember exactly.

 

[jimlips]

Thanks!