battery goes dead overnight

Hello, can you confirm the "new" battery can be fully charged and can sustain a load repeatedly? If so, then you'll want to check what might be causing a "parasitic" draw when the vehicle is off and unattended. Read about it here: https://repairpal.com/parasitic-drain-diagnosis Testing will be needed to see if there is something actively drawing battery power when the vehicle is off and all accessories are off. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops