My mom called me to tell me that her 2012 Prius wouldn't start and was just flickering random lights etc. By the time I got over there the next day it was completely unresponsive and once I checked the 12v battery I found that it was at 1.2v. This battery is only a couple of years old and has never died before and in this case it's probably because my dad drove it and didn't turn the car off properly or didn't close one of the doors all the way, I don't think the car would have developed an extreme battery drain out of nowhere. Do you guys think it's worth trying to charge the battery or is it too far gone and just needs replacement?