Technically it is a 22.5mm driver but it is press fit and needs to be lined up with some bumps in the edge to work, so I would not plan on swapping drivers, piggybacking is a more practical option if that is needed, although I don’t see that working out real well since I doubt a buck driver would fit.
That is unless someone makes a driver just for this light.
I’ve tried measuring the current when the 18650 is housed in a similar kind of battery holder. I think the battery holder’s springs plus the thin wires are causing a massive drop…
The GT mini manual was printed before the “official” manual was sent to lumintop IIRC. So this manual is one they made without really understanding the details.
The stock BLF Q8 (and it seems even the currently-produced models) come with NarsilM v1.0
(can be updated to NarsilM v1.2 — I wonder why they didn’t do so from the factory, for this bestselling light;
which fixes the strobes mode to be cyclable)
The BLF GT comes with NarsilM v1.2
The Lumintop GT Mini now comes with NarsilM v1.3
What is changed between v1.3 and v1.2 of NarsilM? Is there a changelog somewhere?
(I notice the Fireflies ROT66 also just comes with NarsilM v1.2 ; any other factory-produced lights that come pre-installed with NarsilM?)
I guess you could say Thorfire is lazy and/or doesn’t want to risk the newer version having a flaw or issue. So they just leave it as it is. It’s works fine as is, it just lacks a few features. It’s also possible that they need someone to tailor M v1.2 to work reliabily on the Q8. I’m not sure.
I don’t know if there is a changelog between M v1.2 and M v1.3. I don’t think any features changed, it was mostly cleaning up code, tweaks, etc… that the user will not see. M v1.0 to M v1.2 is where we had all the changes that the user notices.