Hi! I haven’t driven my 2008 fortwo in about a month, I did a 14 day quarantine after moving my partner across state lines and when I went to start it two weeks ago the lights were weak and the car wouldn’t start. The next day it was totally dead but I didn’t need to go anywhere because lockdown. Fast forward to today, my roommate was going to help me jump start it and looking over the battery before attaching the jumper cables I noticed this looked snapped off.I don’t know much about batteries but that doesn’t look like it’s supposed to be like that. I also noticed it seemed more wet under the mat than I would have expected after not being touched for a month. We decided to hold off on jumping while I figured out what’s going on but I don’t know enough about batteries to even have the correct terms for a google search. Help? What is this? How much should I worry? And what should I do? Any advice is greatly appreciated, thanks so much!