Carefully Remove the Battery
This step might seem easy, many end up feeling surprised at how difficult it can be to carefully remove the battery after the terminal connectors are off. Some cars have safety measures in place to secure the battery tightly and prevent the battery from moving around while driving. My car has a small metal arm that reaches over the battery to hold it in place, and it requires a wrench or simple pair of pliers to remove it. Remove any safety feature holding the battery in place and make sure nothing will be in the way when you remove the battery. Car batteries are heavy, and if you knock something over with the battery when removing it, you run the risk of dropping it and messing up a part of the engine or your foot.
Set the battery down in a secure area, a tarp or on top of a cinderblock, and move on to the next step.