The problem you have isn't just mazda, this is an electrical problem that can exsist in any car. Did you check for 12 volts from the battery + to engine block?

 

The battery was very dead.Had dead cells.
For the members info.I tended to leave the keys in it,since it was in my garage.This tells the car to get ready to start,so the battery gets beat up.I was also told having the keys within 30 feet also tends to do this.So i guess the keys need to be in a room far from where you park.Thats what the dealer told me.Maybe this well help some one else.

 

When ever you park a car, you should lock it. This puts all the electronics to sleep. Failure to do this will flatten the battery within a week or so.

 

I posted this to help others. Where i live,people dont lock cars parked in theyre own garage.

 

It doesn't mater where you live, its not a mater of security ( al-tho your insurance company may think otherwise).

 

As a new owner this good info to know. Thanks