It's typically situated near the front of the engine compartment, close to the firewall.
To access the battery, you'll need to:
1. Open the hood.
2. Locate the battery. It will be a rectangular black box with terminals on top.
3. Remove the battery cover (if there is one). This may require a few screws or clips.
Note: Be sure to disconnect the negative terminal (-) first and then the positive terminal (+) before working on the battery. Always reconnect the positive terminal (+) before the negative terminal (-) to prevent sparks.