How can I tell the difference between the positive and the negative terminals?
The battery terminals are always labeled with either a plus sign (+) for the positive terminal and a negative sign (-) for the negative terminal. They can also be labeled with pos. and neg. Some batteries have color-coded terminals as well. The red cover usually indicates the positive side, and the black cover marks the negative side. The terminals are always labeled to help you to know how to disconnect and reconnect them.