The flashlight was sent to me by Convoy for review.
Here's the product's link: Convoy L21A
The flashlight comes in a regular cardboard box and is seated into foam.
The L21A comes in black matte anodization. The finish is excellent along the flashlight.
The body contains light knurling, while the design of the head and tail provide anti-roll.
The head of the flashlight is quite big and integrates some thick heatsinking grooves.
Since this specific variant is rated for 8A+ of current, the extra heatsinking is definitely welcome.
A large bezel is placed in the front part of the head to protect the AR coated glass lens.
Of course, being a dedicated thrower, this variant of the L21A uses a smooth reflector.
The OSRAM KW CULPM1.TG emitter is perfectly centered via a plastic gasket.
Of course, the head can be easily taken apart by untwisting the bezel.
The emitter is placed in a copper mcpcb.
As seen, plenty of thermal paste is used to ensure a good thermal path.
The driver is secured in place via a metal retainer ring.
The manufacturer has used a cylindrical brass piece as the positive terminal in order to achieve as least resistance as possible.
The L21A uses a reverse-clickie mechanical switch.
The switch sits below the two rear metal flaps, which allows the flashlight to tailstand.
The switch comes bypassed from the factory in order to decrease the overall resistance.
Here's the rear assembly taken apart
The rear threads are square cut and anodized.
This allows the flashlight to be mechanically locked out.
The head's threads are also square cut.
As always, the threads are very cleanly machined.
And as an added bonus, here's a pic of the L21A alongside the L2.
User Interface The Convoy L21A runs on Biscotti firmware.
Here's a picture that demonstrates the available modes and actions.
Note: In order to prevent accidentally entering configuration mode, the required taps to enter the respective mode has been increased to 20.
Performance Here's the output measurements I recorded along with the respective current draw while using the 5th mode (1%, 20%, 100%)
As you can see, the L21A pushes 1481 lumens while drawing 8A+.
The numbers are quite impressive, as the flashlight has been setup to push the KW CULPM1.TG to its limits.
Thermal Regulation
And here's a thermal regulation chart for Turbo.
What I observed while conducting the thermal regulation:
The driver is constantly regulating the output in order to keep the temperature below a threshold.
At around 15 minutes, the flashlight's temperature and output stabilizes at around 850 lumens.
The flashlight's temperature never got too hot.
I shall say that I'm really impressed that the flashlight was able to maintain > 1000 lumen for such a long period.
Beamshots
Here's some outdoor beamshots demonstrating the excellent throw of the flashlight.
Convoy has nailed it again
I think it wouldn't be an exaggeration to say that the Convoy L21A w/ Osram KW.CULPM1.TGis the most throwie flashlight you can buy at this price range.
And as always, the flashlight's quality is excellent all around.
P.S Tomorrow I will also be posting my thermal regulation charts.
Do you have any cd figures? I saw an article claiming something like 374,000cd. Which is a lot. But the Noctigon K1 claims something like 600,000cd from essentially the same setup.
The K1 is driven a bit harder and has a slightly larger reflector.
Not sure about exact numbers from the K1.
The convoy is more basic, but built like a tank.
It has a bit lower numbers as the K1
I can atest that this L21a woth CULPM1 is an amazing thrower, beautifully machined, built like a tank, and really handles the heat from the osram well. Just last night I was spotting deer with it and kept it on turbo for awhile (over 2 minutes) and didn’t notice the heat in the head. I’ll be interested to see your thermal measurements!
I would recommend this light to anyone looking for a great thrower in this mid size range light for a great price! I can’t say enough about it
Buying it from AE and shipped to the UK, it comes up to £40.80 (about 56$), including the now automatically added tax, in this case, of £6.80 (tax started being added since 31.12.2020).
I certainly felt that tax on my recently bought Sofirn TK70, which rose the final price from £41 to £49.
Is there maybe a better place to buy it from?
Does anyone here know if there is any benefit to using a 40T in this light? It seems like the Samsung 50E would be the longest running and from what I understand work equally as strong as the 40T since 8amps is the limit anyway.
Is the 50E the ideal battery? It should be able to push this light to its max possible power still right?
