Jump started it.
My sister's kid turned on my amp fan when I wasn't looking about a month ago, it stayed on overnight, and the battery was dead enough to not be able to start the car the next day. I jumped it and it's been fine except it's been starting a bit weakly sometimes. Today I'm at Dunkin's, I listed to the radio for maybe 5 minutes with the car off before I go in, I go get a coffee, come back and the battery's just dead enough to not start the car. Walked home 4 miles cuz I didn't have my cell, called recently retired mom to drive me to the Teg to jump it.