Handling difficult questions. It is important not to start responding to a difficult question before you have thought about the answer. Repeating the question and asking for clarification will help create some space for your thoughts.
Make sure all loads in vehicle are turned off, key is in the off position. Disconnect the negative battery terminal first then the positive terminal. When installing the new battery connect the positive terminal make sure not ground out the tool your using while tightening the positive terminal.
Always install the positive cable first, then the negative cable. Always remove the cable from the negative battery terminal first, then the positive. To identify signs of a failing battery, you should inspect your battery case for cracks and bulging. You also should look for corrosion around the battery terminal connections and battery hold-down.