Thanks for the answer ! That are pretty cool pic !
Is there any runtime test done with the 6090 drop-in ?
What about the regulation with 2 x RCR123 ?
FWIW... I took some old SF old primaries that were too dead to even light the P60 incan module (DEAD as a doorknob). These cells were ready for the recycle dumpster.
I tried them out with the P6+DX:6090 and to my surprise, I got a few days use out of them. Of course it was running dimmer than optimal, but it was easily enough light to illuminate my backyard (~40 feet) for a couple days of intermittent use. Died quickly there-after though. So the 6090 seemed to just... dim slowly with the cells and the output turned green/yellow. There was no hard cut-off from the regulation. Protected RCRs probably would have fared differently.
I don't have my DX charger yet so I can't comment on how long or how blazing the output is fresh off the charger (that first ~10 minutes).