Car won't start after recharging battery

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I had some body work done on a 2007 Camry. I picked it up and drove it home. I looked under hood and terminal connections were loose. I tightened them up and when I went to start the car the next day the battery was dead. I removed the battery and took it to Sears and they charged it and said it was fine. I installed it in the car. I have electrical but the car won't start. Help. The car only has 8,000 miles. It was my moter's.