So I have a 2008 Dodge Ram 1500 with the 5.7 after about a week the battery drains to completely nothing what could be the cause?

 

Is there a light staying on somewhere? How much draw on the battery when the truck is just sitting? (you can measure this) How old is the battery?

 

There is not light that I can tell on. But it drains all the way don’t to where I have no power at all. I tried to jump it off another truck but it gave me power but not enough cca to turn over

 

Something is staying on.... and if it takes a week to drain it, it's a pretty small draw. I think the glove box lite would suck the battery down overnight...... Have the battery tested..... (have it fully charged for that event.)

 

Check the light under the hood (if you have one). Sometimes it can come loose and stay on...