I know it is possible to replace a AAA battery with a power source, and that it is possible to use AAA batteries as AA batteries (these are what I find when I google this question).
My problem is that I'm building an electronic prototype that's way too big for my purposes. About 50% of its size is the battery and battery case (it uses AAA). I was wondering if it would be possible to take the specs of a AAA battery (volts, current, power) and find a similar battery that was much smaller to replace it (perhaps one of those tiny disc ones). Then all I would have to do is solder the voltage + ground lines to it?
My EE knowledge is limited but I think this should work. Has anyone else given this some thought or know the best way to approach this, such as what batteries might work or where to find them?
Edit: The project uses 1 triple A battery