Ensure that you regularly inspect battery cables for cracked insulation, damage or corrosion as these might lead to the car's starting problem and bad engine performance. The cable-to-terminal connection should also be examined for corrosion, cracks, and loose strands. If there are white deposits under the insulation it means that it is corroded and should be replaced. Next, examine battery posts for distortion and corrosion. To prevent shortening the battery when removing cables, start by disconnecting the negative terminal first. When replacing the cables, make sure they exactly resemble their predecessors.