Ryan,
I had what sounds like a similar problem several months ago where I found I was losing maybe 45 min a day (don't remember exactly) but it actually turned out to be a software problem (with McAfee Viruscan). I upgraded to a different version and everything was fine.
Here was my thread:
https://www.electrical-contractor.net/ubb/Forum8/HTML/000043.html I've had Batteries go bad in the past and they would always revert to some date and time when powered down. As far as I remember they would keep time correctly while they were on, I suspect your problem isn't the battery.
Bill
