Thanks for your input, guys. I realize that I'm probably over-complicating things in my head, but the amount of information in what should probably be a simple issue is overwhelming to a beginner like me...
For example, this multimeter (model 82141) says it "tests batteries":
http://www.sears.com/craftsman-multimeter-digital-with-8-functions-and-20/p-0...But shouldn't they all be able to test batteries?
This multimeter (model 82334) doesn't say it "tests batteries", but it has fewer settings for the dial in the middle, making it seem less complicated... and it is auto-raging... so easier to use? That sounds appealing:
http://www.sears.com/craftsman-digital-multimeter-with-auto-ranging-11-functi...But then the 82141 model has a 10amp fuse protection, and the 82334 doesn't... fuse protection sounds kind of important, to protect me and my equipment, especially since I don't really know what I'm doing and figuring this out as I go along...
So you see how fast this gets complicating/overwhelming to a beginner?
Thanks again for your help!