My battery was up in age and I noticed that it would turn over slower and slower every cold morning so I figured I should get a new one before it's too late.
I looked thru this site to see which size battery we use and there seems to be some confusion in some threads on whether it is a Group size 24F or 35.
After a bit more searching I found that the correct one is Group 35 (even though the costco booklet showed 24F for my 2007)
Here are a couple of photos to show the difference between both. Apparently the previous owner had a 24F installed (wrong one) so I purchased the correct one. See the difference in sized below.