If I leave my 2015 Audi A3 OFF for two day, I cannot start it without a boost. I am wondering if it's battery or parasitic drain. I disconnected the negative terminal and checked the amp draw and got a 3.5 reading and anytime i touch the batter terminal with the prong there is a sound from the car. Can you take a look at the 6 second video and tell me what is going on? I don't understand.

I did replace the battery today so I guess we will see. The old batter I took out shows a volt reading of 12.67 so it seems that it is good.