My pt won't start lights come on radio on jumped start battery car won't start. on 2001 Chrysler PT Cruiser

do I need a new battery or can something else be wrong. I had a battery jump last week and the car started. now it won't after a jump

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2 answers 1 comment
HOW OLD IS YOUR BATTERY. THE INTERNAL PLATES MAYBE SHORTED.
Get battery and alternator tested. Battery first at a parts store they will charge and test for free. If it holds charge I would start looking at the alternator.
Thanks for the answer. I found out it was the ignition