Lumintop ODL20C USB Type-C Rechargeable Thrower [New]

dra00 · 2018-07-11T16:29:44.000Z

DB Custom:

[…] Replaced 24-26 ga wire with 22ga Turnigy. […]

Do you really think it makes any difference? I’m curious. We talking here about few cm don’t we? From my other hobby: https://www.youtube.com/watch?v=sfU21ZabQ-Y

DB_Custom · 2018-07-11T16:37:57.000Z

dra00, depends on what kind of current you are trying to push. The difference in a flashlight between 26ga and 22ga can be pretty drastic. Maybe not in these low current 12V lights, but definitely so in the direct drive variants that pull high amperage. Especially multi-emitter lights or the new breed of quad die 6V emitters.

I mod lights for a hobby. Hundreds of lights. I eliminate resistance and go for ceiling performance in virtually every light I make, it’s just what I do. I take my time and try to apply all the tricks. I find it satisfying, like identifying stamps in a collection might be for a stamp collector. (I have a few boxes of those somewhere too, from my childhood. Some of those could be worth something if I ever started checking again as many of what I had were very old 45 years ago…)

Edit: Centimeters? Hardly! I always put the wires on the driver then put the driver in the light. I then cut the wires to fit the MCPCB using only the length that’s needed, no extra. If you want to check the driver in a light I made you’re going to have to de-solder the leads…

dra00 · 2018-07-11T16:37:55.000Z

OK, I understand that Thank you for clarification.

DB_Custom · 2018-07-11T16:40:14.000Z

The highest tail current I’ve achieved to date in a flashlight was in one of my own build. 48.8A at the tail. Wasn’t expecting this much and fried a switch, literally melted the plastic housing! Had to resort to a $25 Tofty switch (not made anymore, older members will recall them)

DB_Custom · 2018-07-11T16:43:03.000Z

FWIW, the ODL20C is one of my preferred thrower EDC style lights, I use it often giving it status over the many other lights I have. I think the styling cues are well played, the fins on the head well thought out (it’s relatives have none) and once again I am surprised at the delivery from Lumintop, they’re proving themselves to be a top player over and over again. Well done!

Delta_V · 2018-07-11T16:43:36.000Z

DB Custom:

Intensity has less to do with lumens than you might think. Many a light has had some intense candela readings from de-domed XP-E or XP-G2 emitters with only 500 lumens. Pretty sure it was in the 83Kcd range , will have to see if I can find notes on it.

Yeah, with the same size reflector, an XHP35 HI will achieve less cd/lumen than an XP-L HI, which will have less cd/lumen than a de-dedomed XP-E or XP-G2.

My comment was made based on the XHP35 HI that the Lumintop comes with. Knowing the performance of XHP35 HI and XP-L HI lights with similar reflectors (Emisar D1S, Utorch UT02, Thrunite Catapult V6, etc.), the Lumintop isn’t going to hit 170+ kcd with an XHP35 HI without pushing at least 1700 lumens.

DB_Custom · 2018-07-11T17:03:32.000Z

Possibly.
An emitter focus change can have surprising results. Sometimes the factory get’s it wrong. Sometimes the lens is a bottleneck. Sometimes the same reflector with a slight differenct in surface finish kills the result. Lumintop didn’t quite nail focus in the big GT, for example. In that case the centering ring was too thick…

But yes, you’re point is well observed.

I do remember getting the MaxToch SN6X-2S in the group buy, factory de-domed XM-L2 emitter with quite nice throw… like 335Kcd. A simple lens swap to an UCLp gained 27Kcd in throw…. as always, the Devil is in the details.

Delta… I’ll just continue to hope that Lumintop sourced some better components on that driver to enable it to run at those levels… the originals failed and it was a big mess which is why those other lights are now so underpowered. Boosting a single cell to supply the 12V emitter isn’t as easy as it might seem, proven out by the problems that have arisen… I cut the sense resistor to half what they had on my light and it still only pulled 4.83A at the tail, still very underpowering the XHP-35 emitter at the emitter. Which is why I rebuilt it.

Edit: What happens when the single cell gets down to 3.4V or so? To maintain the 12.6V (approx) that the emitter needs to make the lumens we require the boost circuit has to boost a whopping 370%! As the cell falls further, this continues to go up. Setting up the driver to fail by overheating, typically. With a fresh charged cell at 4.2V the boost isn’t so horrible, amperage draw is low at the tail and demand on the battery is reasonable… as the cell dies and the boost circuit tries to maintain it’s output the demands on the cell go up and up, a situation that I myself really don’t like. The cell is heating up, more demand than ever is placed on it, really tough on the cell. Even a top brand named cell has trouble with this, I hate to think what some of the cheap cells used go through… this is why many protected cells fail to work in a boost circuit light, or fail to work well.

BOMBAY · 2018-07-12T00:43:49.000Z

whether the construction of the switch is the same as in the u21 / UT02, or switch to a new, improved?

dra00 · 2018-07-25T17:29:57.000Z

gerasalex:

[…]
… it will be interesting when receive flashlight ODL20C with what accumulators at you, it will work without problems. That to me already specifically the nobility, a problem in a flashlight or in accumulators.

Gerasalex, both type of my 26650 batteries fits - Imalent from DN70 & DN35 and KeepPower 6Ah. In case of Keeppower I needed to pull out these orange/red stickers from the tube.

And I am very happy with this light - pretty well build and a lot of throw BUT my last thrower was (and still IS ) EagleTac M2XC4 so no experience with the latest ones.

gerasalex · 2018-07-26T14:58:39.000Z

dra00:

Gerasalex, both type of my 26650 batteries fits - Imalent from DN70 & DN35 and KeepPower 6Ah. In case of Keeppower I needed to pull out these orange/red stickers from the tube.

It is about ODL20C? In a turbo mode your accumulators work with ODL20C?

dra00 · 2018-07-26T15:03:01.000Z

W/o problems. Keep in mind that KeepPower has no protection and Imalent has high current protection - DN70 works with XHP70 with much higher current.

gerasalex · 2018-07-26T15:16:32.000Z

dra00:

W/o problems. Keep in mind that KeepPower has no protection and Imalent has high current protection - DN70 works with XHP70 with much higher current.

To me Shockli 26650 5500 batteries мАч already go. Нere at a forum someone wrote that flashlight ODL20C with Shockli works without problems in a turbo the mode. I will know when there arrive accumulators. Thanks!

dra00 · 2018-07-26T15:20:14.000Z

As I read Shockli 5500 is basically the same as KeepPower 6000 so I am sure they will work. I maybe should remove these stickers from tube.
Cheers

bilakos10 · 2018-07-26T20:43:04.000Z

Lumintop please pay attention below.

I just got a unit from Banggood in order to review it.
After running the flashlight on turbo for around 10 seconds, it stepped down and will no longer be able to access turbo's output ever again.
I tried a few high drain 18650 and 26650 cells but no difference.

Here's what I am experiencing.
If I am in Low or Middle and double click then the flashlight jumps on High (it should jump to Turbo).
If I am already in High and double click, I do go to Turbo but the output is not changing at all.
I know that I jump on Turbo because the next click on the switch does nothing - technically it brings me back to High, but in my case High = Turbo. The very next click will start cycling through modes so we are back to the normal modes.

I am speculating that something has gone bad in my driver.
Any thoughts on that?

gerasalex · 2018-07-26T20:31:33.000Z

bilakos10:

Lumintop please pay attention below.

I just got a unit from Banggood in order to review it.
After running the flashlight on turbo for around 10 seconds, it stepped down and will no longer be able to access turbo’s output ever again.
I tried a few high drain 18650 and 26650 cells but no difference.

Here’s what I am experiencing.
If I am in Low on Middle and double click then the flashlight jumps on High.
If I am already in High and double click, I do go to Turbo but the output is not changing at all.
I know that I jump on Turbo because the next click on the switch does nothing - technically it brings me back to High, but in my case High = Turbo. The very next click will start cycling through modes so we are back to the normal modes.

I am speculating that something has gone bad in my driver.
Any thoughts on that?

Probably at you a problem with the driver since the turbo the mode doesn’t work.

bilakos10 · 2018-07-26T20:57:59.000Z

And here's a video of the problem that I described in my previous post.
www.youtube.com/embed/NYxBEOaEhWQ

JasonWW · 2018-07-28T07:44:34.000Z

gerasalex:

dra00:

You should definitely use unprotected

The representative of Lumintop claims the opposite: “For safety concern, we are strongly recommended to use the protected cell to avoid potential reverse polarity connection.”

I really don’t think a protected cell will protect against reverse polarity. The protection circuitry in the battery is designed to protect the battery, not the flashlight.

For this light to put out 2000 lumen I think the amp draw on the driver would need to be around 8 or 9 amps. (Maybe even higher)

My guess is that 2000 lumen is very optimistic. Lumintop does have a boost driver in their ODF30 that can pull 8 to 9 amp. I don’t know if they are using the same driver design here or not.

If you try to use a protected cell you can bet the amp draw will be higher. This is probably why your batteries protection circuitry tripped.

Lumintop has a 26650 protected cell with a higher trip point. It seems to work in the ODF30, but only until you loose a little voltage, then you loose turbo.

For best performance you want to be using aN unprotected high drain and to bypass the springs. Even then, I don’t know if it will deliver 2000 lm.

komeko · 2018-07-28T08:25:12.000Z

Thrunite V6 gave me 1900 lumen at 8.5A on the tail. I think lumintop would have to take a minimum of 10A to reach those declared 2000. Somewhere, I saw the ODL20C test and the 6.5A current was measured so … if it does, there is no chance of 2000 lumens.

If I got into the hands of ODL20C, I would check how it really is.

JasonWW · 2018-07-28T08:41:32.000Z

komeko:

Thrunite V6 gave me 1900 lumen at 8.5A on the tail.

Do you mean 1700 lm? It’s only rated for 1700 lm.

komeko · 2018-07-28T09:04:18.000Z

This is how it results from my measurements. On the Lii-50A. Utorch UT-02 with 5.2A on the tail has reached 1510 lumens, but has a more compact beam and looks very similar in real life.

I counted once again and assuming that the lumintop driver has the same efficiency as thrunite, to reach 2000 lumens, the tail should be around 11A. In doing so, I took into account the diode’s characteristics taking into account the work in overdriving.