I was given a Sunpak Auto555 flash with a Quantum Turbo Battery yesterday, but I have no experience with handle mount flashes. . .to be honest, I have very little experience with external flashes altogether. The flash itself is missing the battery pack that goes in the top, any idea if it should it work if only plugged into the turbo battery? I tried powering on the battery and test firing the flash, but its not working. There's a good chance that I'm just being an idiot and missing something here. Like I said before, I know next to nothing about this flash (hell, it may be broken ). Any suggestions are welcome. I've pretty much got the on/off button figured out, but tips on anything else I may be ignorantly overlooking are welcome Another equipment question. . .I'm looking for a cheap optical slave flash. There is literally no requirement other than it being cheap. Its for a project and will probably rarely be used in the future. Here are three photos for C+C. . .I tried to eliminate the 'pelf' in these (it took me forever to figure out what the hell you guys were talking about with that ) Thanks guys.