No start after replacing serpentine belt

The pulley on the idler arm broke while I was driving and the serpentine belt broke (shredded). Replaced belt and all seemed okay for a couple of days. Now when I try to start the car all I get is a clicking noise. Charged battery and it started a couple of times, then back to just clicking. Even when the battery charger is set on start engine still only clicking noise when trying to start. Radio, lights, door locks, windows, etc. All work when the key is turned on.