My battery is descharged again and again

[antalus]

The car's battery constantly is discharged and don't start my car.

What test should i do to know whats happened ?

The battery is new, i bought two weeks ago.

My car is a corolla s 2006.

I will appreciate your help

[mikered30]

Check if the trunk light or any other lights stay on.

[endofmankind]

you can take you car to auto part store and they can check your battery and altenator. hope this help

[PhatRoyale]

Might be your alternator that is going bad.

[antalus]

My alternator is fine and no lights stay on.

The mechanic say might be the ECU, as recently was changed its possible no was programed fine, he say the ECU don't sleep, always is awake.

He suppose that because when is disconected the car (when the char is off) the ECU lost the memory and must be reprogrammed again to can be start.

So he say the ECU don't sleep to don't lost the memory and consequent the batery is discharged.

The battery charge its keeping for 5 day and then is discharged.

I have a code error:

P0630 Vin not programed or mismatch