Dead battery or something else...?

Negative temperatures here in Nebraska the last couple of days. 2010 Dodge Charger wouldn t start. Jumped it today and ran it for around 45 minutes. Went out just now to make sure it was good.. headlights didn t turn on when I unlocked the car, got it to start. Headlights worked then but were super dim and... show more Negative temperatures here in Nebraska the last couple of days. 2010 Dodge Charger wouldn t start. Jumped it today and ran it for around 45 minutes. Went out just now to make sure it was good.. headlights didn t turn on when I unlocked the car, got it to start. Headlights worked then but were super dim and flickered.

Now I can t start the car and no headlights at all. Do have brake lights, dash lights and radio still. Sound like I just need a new battery?
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