I was going to use a 9V (PP3) for my project, but it won't fit in the compartment. Instead, I'm going to pile 6 alkaline button cells together and bind them with tape, to make a 9V that will fit.
What's a good way to make contact with a custom sized battery's contacts? I assume it's inadvisable to solder to alkaline buttons contacts? (I know Li cells are dangerous.)
FYI, my project needs to be completed today, in a short amount of time, so I can't run around trying to round up pieces at stores, etc., and need to rig something with things I've got already.
BTW, allowing for easy replacement of the battery would be nice, but it's not at all a requirement.
I've got some ideas, but they're not great (e.g., wad up wire leads and tape them tightly to battery contacts).