You come out after work and you get in and your car tries to start but then click click click no joy It's probably just a dirty battery terminal you can handle this and be back trucking in no time with these handy tools. A terminal wrench A terminal brush Use the wrench to loosen and remove the battery cable and look for the tel tale green and white corrosion that grows there. Use the brush to clean off all the offending corrosion Check for a spacer in there also it will pop out and get lodged in the worst places (dont ask me how I know LOL) The corrosion get in under the spacer but like I said keep an eye out for that part getting lost. So you might consider keeping one of these handy also! Without the spacer you wont be going anywhere soon. Once all the parts are clean put it back in the reverse order and try the ignition again it should fire right up and you are off. Note on the spacer if you cant find one in a pinch you can use a nut till you can get proper spacer!