The battery is located by the driver's front wheel. You have to turn the wheel all the way in to access the panel to remove the battery.
it all depends on what kind of battery you want but their not expensive
Scan tool or unhook the battery
On the top of the battery look in the engine compartment directly above the battery.
5 or 6 quarts
I just spoke with a tech from Auto Zone and the prices were from $75.99 - $105.99.
take the terminals off and take the battery out and replace it \
How much to repair a head gasket for a 2002 dodge stratus
I have a 2002 Stratus Sedan, and mine are discs.
See my answer on 'How do you change the headlamp on a 2006 Dodge Stratus? Hope it helps ...