This happens to me continuosly for a week i have been changing nearly 5 battery, my alternator is totally fine what is wrong with my car.THe battery just die off ,what is the possible reasons?

ALL MY BATTERY IS BRAND NEW AND SOME ONE TOLD ME IT MIGHT BE IMPROPER GROUND WHAT DOES THAT MEANS?

 

have you checked your alternator with a volt meter?

do that first...oh and what year car do you have cause i had the same problem on my girls car...nothing was wrong with her alternator either and i changed the battery twice over a period of 5 days...the fix was wiring up an 8 gauge wire from the alternator to the battery...sounds silly but i think the main wire harness was bad somwhere and not giving a full charge to the battery.