I have a Chevy 350 Iroc-Z 5.7L Motor and my battery keeps dying (brand new bought it 2 weeks ago). I got a brand new alternator and starter, and thought it would fix the problem well the battery died again. No lights are being left on I don't got a system in my car or anything that drains power. I have no idea what else it could be though. It takes about 2 days for my battery to drain from a full charge.