Hey everyone, I checked eBay and nobody has a 2009 Mac Pro CMOS battery for sale; in fact, nobody even has a Mac Pro CMOS battery in the first place. All I get in the results are CMOS batteries for MacBook Pros. I tried PowerBookMedic.com, but their batteries seem to say that they're for the Mac Pro and 2008 Mac Pro... a bit vague. I'm wondering if maybe it IS for the 2009 Mac Pro? Not sure of the model number. BTW, is it that necessary to have a new battery? I have the internet set my date and time anyway.