Review : Utorch UT02 Flashlight (XHP35 / 26650 / usb rechargeable)(in progress)

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giorgoskok
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Maybe only mine is/was faulty .

Anyway , if there is an issue it will be solved somehow .

hIKARInoob
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giorgoskok wrote:
Maybe only mine is/was faulty .

Anyway , if there is an issue it will be solved somehow .

Contact Manker, they have the blueprint.

giorgoskok
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hIKARInoob wrote:
giorgoskok wrote:
Maybe only mine is/was faulty .

Anyway , if there is an issue it will be solved somehow .

Contact Manker, they have the blueprint.

Gearbest is the shop that sells the lights . That’s the one thing i know , and contact gearbest if you want to know the manufacturer .

I would appreciate if people who get the light report back , thanks .

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Trouble is most have no way of measuring output so won’t know if it’s working properly or not Sad

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Cool, thanks for reviewing this light.

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Mstevens113 wrote:
Trouble is most have no way of measuring output so won’t know if it’s working properly or not Sad

Measuring the amps at the tail will do.

giorgoskok
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JamesB wrote:
Mstevens113 wrote:
Trouble is most have no way of measuring output so won’t know if it’s working properly or not Sad

Measuring the amps at the tail will do.

Exactly

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Think I’ll give this one a miss.

Don’t have the equipment to measure output or amps at tail.

giorgoskok
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We don’t know if any other flashlights have any problem.

We will see…

cdjaney
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For reference, and comparison, does anyone know what the stock Manker U21 pulls?

John 1:5 "The Light shines in the darkness, and the darkness did not comprehend it."

giorgoskok
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From Tom E ‘s review i remember 5.45 amps in turbo .

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Ohhhhhh. That’s why those numbers were being quoted. Sorry. I thought that was AFTER he modded it.

John 1:5 "The Light shines in the darkness, and the darkness did not comprehend it."

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cdjaney wrote:
Ohhhhhh. That's why those numbers were being quoted. Sorry. I thought that was AFTER he modded it.

No, it's in the review thread OP and I'll stick with stock #'s, etc. for the OP.

"On Turbo, measured 1.08A at the LED (16 AWG patch wire, UT210E clamp meter), and 5.52A at the tail with a EFEST IMR 26650 5200 mAh cell. "

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Tom E wrote:

cdjaney wrote:
Ohhhhhh. That’s why those numbers were being quoted. Sorry. I thought that was AFTER he modded it.

No, it’s in the review thread OP and I’ll stick with stock #‘s, etc. for the OP.


“On Turbo, measured 1.08A at the LED (16 AWG patch wire, UT210E clamp meter), and 5.52A at the tail with a EFEST IMR 26650 5200 mAh cell. “

Ouch. I really hope giorgoskok’s results aren’t the norm then. Guess I’ll find out tomorrow night when mine arrives. I don’t know how to measure that, but at that much of a difference, I’m sure eyes will tell me when sitting side by side with my U21 (that I was hoping to be able to send back if this could replace it).

John 1:5 "The Light shines in the darkness, and the darkness did not comprehend it."

khas
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So far It’s three out of three that’s low in amp draw :

KawiBoy1428 wrote:
Meh, just got 2 of them today, 2.45amp and 2.22 amp on the other! Purple Efest 4200, Basen and a Imren IMR 26700 all read the same. Dust particles on/in both reflectors and a smear of shmuck on the inside of the lens on one of them! Facepalm Seem well built, focused. Don’t like the switch, sets too low for my liking, too much travel a PITA to activate for me any way, FAT fingers!!! Just wish they were cleaner inside, I’ll try blasting the crap out and clean the lens. Angry Hopefully they will clean up? Sad
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2.22Amp, well, it’s even lower than some Xp-G2 flashlight
2.22*4V~9W, with 80% effective, i think the power of led is around 7W, Doubt it is over 1000 lumen

Forgot my pen

Tom E
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This is what I measured on the Manker U21, CW 1A:

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mrheosuper wrote:
2.22Amp, well, it’s even lower than some Xp-G2 flashlight 2.22*4V~9W, with 80% effective, i think the power of led is around 7W, Doubt it is over 1000 lumen

If the light is making 9w, the led will see .75amps at 12v. According to the data sheet, the led should make 880-1100 lumens. However, take into aciunt eficiency and losses that means only 600-850 lumens out the front depending on the flux bin.

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Hhmm. Would be interesting to compare against the stock Manker U21 driver:

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Removed the driver this morning . It’s the same driver you posted Tom E .

I looked for weak connections or something suspicious but i found nothing .

So , stock numbers : Amps at the tail : 2.65A / Amps at the emitter : 0.7A / ~70kcd intensity (meter i a bit under-reading)

As a last step , i checked the sense resistor . It was the same R050 as Tom E’s driver , http://prntscr.com/dhcbsh .

I added another R050 on top of the existing one , and it was pulling 5.7A from the battery .

I let the light run for 10 mins without any issue . Charging cell now for more tests …

PS . I have already contacted gearbest to check the production with the factory .
Also UT01 came today , at least this is working properly .

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Nice looking light. tongue-out

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They claim its 1300L, are those ANSI Lumens or just a ball park number? (looks like the latter)

Curious… how much wattage does the XHP35 need to reach 1300 emitter Lumens ?

How is the PWM ?

How did you get the UT01 so quickly?… hope mine comes soon to CA, USA.

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I think it only needs 800mA to 1A to reack 1300lm .

Pwm not visible , i’ll try to test with oscilloscope (if i have access this week) .

UT01 was sent with dhl .

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kramer5150 wrote:
They claim its 1300L, are those ANSI Lumens or just a ball park number? (looks like the latter)

Curious… how much wattage does the XHP35 need to reach 1300 emitter Lumens ?

How is the PWM ?

How did you get the UT01 so quickly?… hope mine comes soon to CA, USA.

It depends on the flux bin, but in this light it would probably take 14-16watts

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kramer5150 wrote:
They claim its 1300L, are those ANSI Lumens or just a ball park number? (looks like the latter) Curious... how much wattage does the XHP35 need to reach 1300 emitter Lumens ? How is the PWM ? How did you get the UT01 so quickly?... hope mine comes soon to CA, USA.

Again, the Manker U21 specs were basically copy/pasted, so I'd expect what I posted in post #48, assuming they copy/pasted the light smile.

The 1,345 lumens I measured was at 30 secs in my NIST calibrated PVC light box (ok - PVC light boxes can't be NIST calibrated, but would be nice). I'm pretty confident my PVC light box is in the ballpark from testing 100's of lights in it. The lower modes though are quite a bit off in what I measured.

It sounds like 3 of 3 received so far are doing much lower in amps, much lower in output, so....

 

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I don’t know about KWB’s lights…

Sent him a pm , never got an answer . I really don’t know .

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Tom E wrote:

kramer5150 wrote:
They claim its 1300L, are those ANSI Lumens or just a ball park number? (looks like the latter) Curious… how much wattage does the XHP35 need to reach 1300 emitter Lumens ? How is the PWM ? How did you get the UT01 so quickly?… hope mine comes soon to CA, USA.

Again, the Manker U21 specs were basically copy/pasted, so I’d expect what I posted in post #48, assuming they copy/pasted the light smile.


The 1,345 lumens I measured was at 30 secs in my NIST calibrated PVC light box (ok – PVC light boxes can’t be NIST calibrated, but would be nice). I’m pretty confident my PVC light box is in the ballpark from testing 100’s of lights in it. The lower modes though are quite a bit off in what I measured.


It sounds like 3 of 3 received so far are doing much lower in amps, much lower in output, so….


 

In that case, this is not high flux bin, so it looks like 18-20watts required? Is this why people are saying it’s no less to use an overdriven xpl?

khas
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giorgoskok wrote:
I don’t know about KWB’s lights…

Sent him a pm , never got an answer . I really don’t know .

khas wrote:
So far It’s three out of three that’s low in amp draw :

KawiBoy1428 wrote:
Meh, just got 2 of them today, 2.45amp and 2.22 amp on the other! Purple Efest 4200, Basen and a Imren IMR 26700 all read the same. Dust particles on/in both reflectors and a smear of shmuck on the inside of the lens on one of them! Facepalm Seem well built, focused. Don’t like the switch, sets too low for my liking, too much travel a PITA to activate for me any way, FAT fingers!!! Just wish they were cleaner inside, I’ll try blasting the crap out and clean the lens. Angry Hopefully they will clean up? Sad
giorgoskok
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I have seen this khas .

I sent him a pm too .

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Can you test if 2 26350 will fit? Without destroying the light of course..

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