Well, it might only matter if you have pc maintenance scheduled. I don't use that on mine, but some people do. I just do the maintenance when I think about it once in a while, just like defragging, etc.
I don't know how much those batteries cost though as I've never had to replace mine. You just have to make sure you get the right one---that means you will most likely have to take the old one out first to get a match unless you might have paperwork on the motherboard. It's a good idea to keep all the pc paperwork, but I got mine as a deal, so I get get any of the papers and I have to do it all the hard way now. But hey, I don't forget it this way.

I think the email times will be off too and if you look at the posting times on here, they'll probably be off. It might only matter if it matters to you? I'll have to ask the hubby--he's the pc man around here.
--
--Be who you are and say what you feel:
because those who mind don't matter
and those who matter don't mind. --