Ok so with this…the protected rcr123a terminate at 2.5v… this means they would cut off at around 5 volts being that two cells are used?When in series, the voltage scales up. Current draw stays the same. You'd need to run them in parallel (neg to neg, pos to pos) to double the current. Like in a soda can light.
The m62hot would be at around 7.2v and would be fine. But the hound dog would be over the rated draw
I presume he's using a power supply to get those number seeing as there's no way I know of to get 6 or 9 v. Maybe with those keep power regulated 3v cells