>For your purpose almost any 9 volt battery will do. You will
>only use it rarely so by the time you need it, you will have
>lost it anyway, at least I would have. lol
>
>I'd get an alkaline battery - they've got a long shelf
>life.
>
>You do know that you don't keep it plugged in when the car
>battery is installed and/or the engine is running, right?
>
>Jim.

Right, thanks jim, i remember you told me that already, and the instructions say the same thing......


:)