How do you change a battery on a Ford Transit 2006?

To change the battery on a 2006 Ford Transit, first ensure the vehicle is turned off and parked on a flat surface. Open the hood and locate the battery; disconnect the negative terminal (black) first, followed by the positive terminal (red). Remove any securing brackets and lift out the old battery. Replace it with the new battery, reconnect the positive terminal first, then the negative terminal, and secure everything back in place.