No power to entire car 2005 Dodge Stratus sxt 2.4l dohc sedan

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I was driving home on the highway the battery light came on and the car shut off in less than 30 seconds.towed it home I charged up the battery and the entire car has no power. Headlights,interior light,radio,dash all out. I checked the battery connection it's good and I don't know what do look at to correct this. I need advice on what to do next