The battery itself is located in the right side of the trunk. However, there are points under the hood which you can use to say, charge the battery or jump-start.
First, open the hood.
Facing the car from the front, there is a bolt-like thing sticking from your "left" side of the car, and a red tip next to the windshield washer. Those are the points.
I have a photo. The one circled in red is the (+) positive point. [remove the red cover] The one circled in black is the (--) negative point.