Wont start on 2005 Dodge Ram 1500

Truck engine just clicks when trying to start it battery and starter are good what could be the problem?

Asked by for the 2005 Dodge Ram 1500
Usually this is a sign of a battery with one dead cell as it will still light the headlights and play the radio but won't have the amps to engage the starter. Best thing to do is have the battery tested at the parts store or go to Sears, Pep Boys etc My call is you need a new battery