Well, this gets messy. The site support questions related to electronic design(even though our name has changed again). However, if the question is from a consumer electronics perspective it will not fair well. This often becomes quickly apparent as when you as a question like:
Is it true that all else being equal
huge rechargeable batteries like ones
used in power tools and electric cars
have better lifetime compared to tiny
batteries like ones used in cell
The first think I can tell you is that it depends on battery chemistry, which does not necessarily correlate with size, but with task, demands and budget. This is actually a very very broad question that does not have a great answer. This I would closed as "Not a real question" as the
It's difficult to tell what is being
asked here. This question is
ambiguous, vague, incomplete, overly
broad, or rhetorical and cannot be
reasonably answered in its current
Question is a bit broad. We could also run into subjectivity as their are different ideas of size and there could quickly be arguments.
If someone asks a concise question about batteries it will stay open 99 times out of 100. The major thing to focus on would be technical problems.
We have had questions such as:
How do I connect two identical batteries to increase the consumer lifetime?
Are coin cells a suitable replacement for AA batteries?
Small batteries for use in cold but not freezing environments.