Selfbuilt's Convoy M21F review

My latest review:

Convoy M21F

Another strong performer from Convoy, again very impressive for the price. Here’s a teaser runtime from my review:

Sorry it took so long to get to this one, still going through the backlog of lights I picked up last fall.

8 Thanks

Impressive sustained output as we expect from Convoy! Thanks for the testing.

2 Thanks

Excellent review. I just purchased it with the XHP70.3 and it’s great. The issue, like you had, is the ramping speed. Although, I find that mine ramps very very slowly. They must have read your review and adjusted the speed. Compared to my others, this one is probably half the speed. Is there any way this can be adjusted?

1 Thank

No, that is a factory setting that can’t be adjusted. Or at least, I’ve never seen a light that gave the end-user a way to reprogram. Even the sophisticated Anduril UI doesn’t let you alter ramping speed. I suspect this is because programming it is fairly complicated to start with (i.e., building in the number and specific output of individual levels that make the ramp, in a non-linear fashion).

If you find it too slow, you may want to stick with the discrete level option - I presume that goes through outputs slowe for you?

This is one of the main complaints people have with the Convoy e-switch UI. At least the Anduril ramp speed is smooth and consistent. I have to say these UI niggles are actually a dealbreaker for me, and I avoid the Convoy models with E-switches exactly because of this.

1 Thank

I haven’t messed with it other than that. I do love the beam profile of the 70.3, not too floody and still throws. I guess I’ll keep looking.

Brilliant review. I bought the exact same mode, and emitter.

I recently took mine out on an hour long walk with an air temperature close to zero Celcius. After 40 minutes on turbo, it dropped down two levels. It would not maintain turbo after that, but happily ran on high but gave out ten minutes later. Last night I ran it on turbo indoors, after ten minutes the light output had dropped to 323 units from an initial 706 units and maintained that for 65 more minutes until I got bored. That suggests about 1,200 lumens assuming the initial was 3,000. This suggests that the drop down temperature is determined by the temperature at the emitter, as cold weather would allow for better heat dissipation. I am of course guessing. Does anyone have further input as regards the turbo regulation?

Mine had flawless maching and anodising, yes it’s not type three III HA, and it’s only splash resistant, but it’s a steal at the price for dog walkers and casual walkers in general. I would hesitate to use it in heavy rain, which is why I carry a small reserve torch (Olight S15 2AA).