Need help with vs

[tmt23]

my vs was working fine then one morning didnt want to start, so jumped started it but one i put it in gear it would die.
thought i had a dead battery so replaced it with a new one, drove around for a day and the battery went flat.
thought the alternator wasnt charging the battery so replaced that and charged the new battery, drove around for another 2 days and it did the same thing. i have no idea whats wrong with it, any suggestions?

[Brendo169]

check all earths and connections between the alternator, engine and battery

[Cpt Awesome]

Yeh what brendo said. have a look at this VS v6 owners check this out

[Crewmanss 06]

or you could do a current draw test on it

[PanthaVS]

or you could do a current draw test on it

Agreed... with the car/engine OFF, keys OUT of the ignition...

remove the "positive" battery terminal and put the meter between the removed terminal and battery post.

refer here:
YouTube - Measure The Standby Current Draw On A Car Batttery

let us know what you get...

[Crewmanss 06]

& even thou you said its a new battery get it load tested as in the last few week ive had 5 to 6 brand new batteries
fail on a load test spoke to the battery supplier & they just said i got a bad batch hmmm bad batch of centurys oh well covered by warranty