Okay, I've been Googling for an hour now and not finding what I'm looking for, so obviously I'm asking the wrong questions. Here's my situation:
I have a miniature camera that runs off of a 9v battery for ~24 hours. I would like to extend that running time, and I have the space in my enclosure for additional 9v batteries. However, I cannot find a website that details the laws of physics when dealing with power supplies in series or parallel (since I'd rather not fry my camera with too much power). There are plenty of websites that talk about how resistors act when in series or parallel, but what are the actual formulas for power supplies in series or parallel? Or is that not the right term when it's referring to power supplies, since I can't find any websites that way. Anyone have any good resources for me?