Welcome treed, to the Forum.
Take the PT to a auto parts store and have them check the output of the alternator to see if that is the trouble. It also could be the battery especially if it is original. Maybe it is only the battery, it is easier to change.
Good Luck and let us know how it goes.
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2008 Silver Steel Metallic, Touring, NA, Sirius; Chromed door handles; lower grille; fog light surrounds; chrome front & rear bumpers strips; Airaid air filter; Bassani duals; Modesty Cover; Autolite AP5263 Platinum Plugs (.040); Crane Plug Wires; NAPA Ceramic pads; Blane hood struts; PTeazer Gas, Brake & Foot Rest Pedals, '05 Rear Step Pad, Stainless Door Sills, Llumar tint, "A" Piller chrome; APC Strut Bar