The M31 has identical dimensions as the other modules you already have. Something else to consider. Any of the regular M60 or M61 modules will run in a low output moon mode state for alot of hours on AA cells.
(2) 18500's or (2) 17500'sI'm also getting an MD3 body. What battery combinations can I run? Obviously, I can use 3 CR123's, but what else fits in there?
So I did a unscientific runtime test for an M61 on a single RCR123 and got about 35 minutes at full output and still plenty of light (%30 or so) an hour later.
This makes it a viable option for me as an EDC. Right now I'm running it in an E1E body VME head and E-series twisty tailcap.
In a MD3, you can also use two (2) 18500, three (3) 18350's, or two (2) AA batteries.
I think you need a m30/m31 if you want it to be regulated. All the m61's will go out of regulation on 2 aa's, so it dont matter how many L's you got. It will be dim and run forever anyway.Great, thanks! For running AA's, don't you need to run a m61LL? I thought I read somewhere that that's the only module that really works.
What rcr123 are you using? I only got about 5min from an aw rcr123 500mah on a m31.