So the dealer put a small battery in.
What type of battery needs to go in a 2009 rx8 gt??

 

For this question, I would call a parts store and have them look it up. They will be able to tell you a form factor. There is supposed to be extra space in the 04 battery box to allow air to circulate for cooling. I am not sure about the 09

 

Thanks. Ya they didn't put the terminals on tight enough and all types of wierd things started happening in the car.
The battery is 100 cranking amps lower than supposed to be