So I come home from Georgia,
Find that my father bought a new battery for my car,
Thats very nice of him,
Why did he buy one you ask?

He says old one was four years old and was not taking a charge anymore,
So I installed this new battery and tried to start it,
but the car did not start, instead... this is what happened:

1. Key turned to second position, all dash board lights turn on, buzzer goes burrrrrrrrrreeeerrrrrrr like normal,

2. Key turned to start position,
small popping noise, then everything stops working,

what have you done, I angrily ask him, but I know he knows no better,

I put the key in today, turned it to position two, only one light came one, the red SRS but it was flickering and the buzzer was going in and out,
Even with the battery connected, there are no power locks, no radio, NOTHING,

I open the hood to find that he installed an 810AMP BATTERY!! DEAR GOD!!!!

Please note that my car has the updated OVP relay.... I will be going to Costco to return the battery...

Questions to the wise people of the board:
1. How bad is it? ECU? OVP? I checked the fuse box, nothing blown there, have not checked OVP yet. Other stupid crap keeps taking my time!
2. What kind of battery do I need for this car? This one that I have does not even fit the tray properly....

If this car is destroyed, I will lose my job starting January!!! WAAHHH!!!!!!!!!!

__________________
2006 BMW M5 "Heidi" @ 109,000 miles
2005 MBZ C55 AMG "Lorelai" @ 165,000 miles
1991 MBZ 300E "Benzachino II" @ 165,000 miles
1990 MBZ 500SL "Shoshanna" @ 118,000 miles

(On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!)