What size battery is in a 1997 olds aurora?

The 1997 Oldsmobile Aurora typically uses a Group 75 battery. This battery size is generally rated at 12 volts with a capacity that varies, but it typically falls within the range of 600 to 800 CCA (cold cranking amps). Always check the vehicle's owner manual or consult with a professional to confirm the exact specifications for your particular car.