Okay I have something draining power from my car. The weird thing is, in the summer the car can sit for 5days to a week and still start but in the winter, it'll be pretty much dead overnight. Some mornings it'll have enough juice to start, sometimes it doesn't. Electrical issues are such a pain to trouble shoot so I was hoping maybe somone has had a similar problem and a resolution I can try before really digging into it. Any ideas? Thanks.

 

battery....? The cold can drain a battery pretty good(kinda)

 

Lower CCA = bad Batt! Take it to Advanced Auto, if your lucky you'll get someone that knows what they're doing and can use their machine and test it still in the car. Other Option is My Favorite cause it's my best friend, use a DMM. Test your Alt output (13.4-14.0volts good). Test the CCA. Test your grounds and leads and see if you have any closed circuits draining power. Don't go cheap, buy a Deep cycle marine Optima.... I love mine!

 

I've actually had it tested in the winter time. I jumped it and went straight over to Auto Zone and they said my battery and alt output was all normal. That's why I think I have something else draining power. Maybe I can try a different higher CCA battery and see if that works either that or test it with a volt meter and see how much it's drawing while it's sitting.