My car just shut off random while diving or putting the car in drive and the battery light comes on just had a battery replaced a couple of weeks ago...only had this car for about month...please help

Fist you must check your altenator, this sounds difficult but it is easy to do. If your car wont start charge the battery to full charge, Tale a digital tester (you can buy these for under 10 bucks) set the setting to DC VOLTS with the car running you need to have at least 13.5 to 14 volts to maintain your car while running to keep your battery fully charged and run all your acc.