[BlueRooster]

Can someone explain in detail how this little bugger functions? How I can decipher what it is telling me?

AND why a volt meter is better, and how to hook it up?

My battery did not fare too well over winter this year and it takes and holds a charge, but if it sits for 2+ weeks it becomes too weak to start the car. So I am trying to learn a little more about the charging system this year.

Thanks Guys.