|MadSci Network: Chemistry|
Well, for data like that you do library research. And when you find it, you give credit to the people who did the research, and compare theirs with yours. You may or may not have access to a science library, but if you're accessing this web site you can do a lot of research online these days. Basic search engines are a wealth of information on basic science questions. Battery life, according to the response you were asking about (kudos to the MadSci administrators for looking that up for you) involve chemical reaction rates. A google search of "chemical reaction rate temperature battery" (everything you could want) turned up this German page: http://www.basytec.de/Literatur/tempe rature/DE_2002.htm as its first search return. It has the type of data you're looking for, I bellieve. What's more, it has references to where it found much of its information, which you may be able to find. And that was just the first item returned in the search. Library research (which internet searches are a part of) can be tedious, but it's very valuable to learn how to do.
Try the links in the MadSci Library for more information on Chemistry.