Did not run a pair of fresh primary lithium AA's for very long but the amount and quality of light was impressive indeed.
Also used a piece of wood and copper foil strip to make a dummy battery with a 10440; not a good idea. The emitter turned color in a bad way. I turned it off quickly and it was OK. It's funny because 6Volts (pair of 2016's) is Ok in a Photon pinch-flashlight, being significantly brighter than a single 2032 battery. Guessing low current/capacity of coin cells matters.
By-the-way, decided to take the turquoise emitter out of the Minimag and installed it in a vintage Photon Freedom with covert nose; much better with the 6V making the tint what it is supposed to be.