Discussion : - Utorch UT01

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kramer5150
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FWIW… I just depleted a 2000 mah eneloop on Turbo. Didn’t actually time it, but it was in the vicinity of 45 minutes. Right around ~1V output dropped down to one of the low modes. I am not sure exactly which one but it was around 50 Lumens and i think its similar to my second lowest programmed mode. Pressing the button at this point only cycled between 50L low and firefly. I could turn the light on and off, but turning it back on at this point only presented two modes… firefly and the 50L.

Removed the cell and measured it immediately at a comfortable .95V.

kramer5150
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Enelooper wrote:
When using an eneloop charged to 1.405V, my UT01 works great. When the voltage drops to 1.295V, the light starts to act weird. Sometimes it will turn on normally, sometimes I have to click two or more times to turn it on, other times it doesn’t turn on at all. Once it turns on, it works normally.

Anyone knows what’s going on?

I dont think that’s the LVP. 1.29V is still more than healthy for NiMH. FWIW neither of my lights do that… the UT01 or Makner E11.

kramer5150
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Enelooper wrote:
Enelooper wrote:
When using an eneloop charged to 1.405V, my UT01 works great. When the voltage drops to 1.295V, the light starts to act weird. Sometimes it will turn on normally, sometimes I have to click two or more times to turn it on, other times it doesn’t turn on at all. Once it turns on, it works normally.

Anyone knows what’s going on?

Put another eneloop in. Ran it on high until it dimmed. Now it won’t get any brighter than medium. Turned off and it won’t turn back on again. Voltage is 1.1V. Is LVP kicking in? Shouldn’t it do that at 1.0V?

Not getting any brighter than ~medium sounds like the LVP doing its thing…. at least thats what mine does.
Mine at that point will turn on and off however.

I am guessing there is a tolerance or window for the circuit, so the actual voltage level may vary from light to light. 1.1V – 1.0V might be within range for the LVP.

It sounds to me like you just have an over-protective LV circuit.

Enelooper
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kramer5150 wrote:
Enelooper wrote:
Enelooper wrote:
When using an eneloop charged to 1.405V, my UT01 works great. When the voltage drops to 1.295V, the light starts to act weird. Sometimes it will turn on normally, sometimes I have to click two or more times to turn it on, other times it doesn’t turn on at all. Once it turns on, it works normally.

Anyone knows what’s going on?

Put another eneloop in. Ran it on high until it dimmed. Now it won’t get any brighter than medium. Turned off and it won’t turn back on again. Voltage is 1.1V. Is LVP kicking in? Shouldn’t it do that at 1.0V?

Not getting any brighter than ~medium sounds like the LVP doing its thing…. at least thats what mine does.
Mine at that point will turn on and off however.

I am guessing there is a tolerance or window for the circuit, so the actual voltage level may vary from light to light. 1.1V – 1.0V might be within range for the LVP.

It sounds to me like you just have an over-protective LV circuit.

Thanks for sharing. I may end up using this light with a 14500.

OeBu
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Not the highest quality torch, but it’s not bad.

Lexel
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I got one during 11.11 event in NW XPL V6-3D

But compared to my other lights including the Q8 it is definitely a 4000K emitter
anyone else have too warm emitters?

kramer5150
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My Manker E11 is very warm / amber colored while the UT-01 is pale white.
Both were the NW version of each.

Pete7874
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Lexel wrote:
I got one during 11.11 event in NW XPL V6-3D

But compared to my other lights including the Q8 it is definitely a 4000K emitter
anyone else have too warm emitters?


Same here. The one I received a couple of weeks ago seems warmer than 5000k.
Jerommel
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Mine too.
I like it.
But the switch problem… Facepalm

2Q19

Lexel
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too warm for me, sounds like they get a ticket

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I ordered the CW version now, hoping I will like it better. Just keeping my fingers crossed that the switch is not broken.

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I mentioned the 4000K two weeks ago in the other UT01 thread. I like it too, but it is way off the 3D tint that the site and the package claims.

Tumbleweed48
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Last night I was comparing some lights.

I have some 5A tints in other 1xAA lights (emitters that I got from Intl-Outdoors), and these ‘alleged’ 3D UT01’s are remarkably close – which is fine by me. Thumbs Up

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djozz wrote:
I mentioned the 4000K two weeks ago in the other UT01 thread. I like it too, but it is way off the 3D tint that the site and the package claims.

I have Astrolux S1 3D (neutral white), the tint of which I like.

Comparing the UT01 neutral white (supposedly “3D” tint), this is a much warmer — in fact I compared it with a Convoy S2+ (XM-L2 T6-4C tint), and the two tints are closer to each other, or the UT01 “3D” could even be very slightly warmer..

d_t_a
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Decided to do some more pics while I’m at it..


Lighting under fluorescent tube


Astrolux S41S Nichia 219B (90CRI — based on product description when I bought this)
(This is the closest to what the floor looks like in actual)


Astrolux S1 XP-L (3D tint)


Convoy S2+ XM-L2 T6-4C


UTorch UT01 neutral white ‘3D’

using a budget digital camera with setting “Daylight” white balance

Pete7874
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Not a fan of this NW tint on UT01. I’m hoping I like the CW version better.

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kramer5150 wrote:
Firefly – L/M/H (single tap to chose your output level)

Any idea about the current draw or lumen output for those three options on the firefly mode?

Streamer wrote:
I was late, and after reading the reviews it seems the worst case scenario upon receiving one would be having to remove rubber boot switch cover and possibly re-center the switch button. Small price to pay for such a fantastic little torch. That is, if you were unlucky enough to have received one that needed a tweak.

How did you know yours were off-center?

and on the first day he said "Let there be light"...

kramer5150
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Here are some Lumen output numbers with NiMH…
http://budgetlightforum.com/comment/1063398#comment-1063398

Not sure what it is with a 14500.

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kramer5150 wrote:
Here are some Lumen output numbers with NiMH…
http://budgetlightforum.com/comment/1063398#comment-1063398

Not sure what it is with a 14500.

Thanks, I only use eneloops so I don’t want to know 14500. I’ve been reading a lot about UT01 in this forum and it seems there are problems when using NiMh so I guess I won’t be buying this and go for Sorfirn SP10B instead.

and on the first day he said "Let there be light"...

kramer5150
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That would probably be wise.
I am not sure what the current draw is. FWIW I leave my UT01 on candle mode overnight all the time… many nights in succession. I use it as a nightlight with a 2000mah eneloop.

Pete7874
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Pete7874 wrote:
I ordered the CW version now, hoping I will like it better. Just keeping my fingers crossed that the switch is not broken.

I got my CW UT01 finally. For walking outside, I think I do like the CW tint better.
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CW and NW optional?

vwpieces
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Welcome to BLF LTVictor.
The light is available in Neutral white or Cool white.
I have the NW and it is warmer tint than the described 5000K. I would say closer to 4000K.

ryukin2000
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vwpieces wrote:
Welcome to BLF LTVictor. The light is available in Neutral white or Cool white. I have the NW and it is warmer tint than the described 5000K. I would say closer to 4000K.

Closer to 4000k? Nice. I ordered both tints. Maybe the CW will be decent.

Lexel
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Latest lights are reported with 4000K Emitter

varbos
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I just got a “NW 5000K” that I ordered around 11/11. Yes, the tint is definitely more like 4000K.

It’s an okay tint, but I think it has a tiny bit of green in it. I don’t hate it but I would have preferred a genuine neutral white.

I am tempted to order a 6500K if there is another deal for 10 bucks. Normally I don’t like cool white but this light is a bargain.

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Interesting. My NW UT01 is really rosy and not green at all.

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I guess they changed emitters recently, here’s a (shortened) quote from the Lumintop EDC05 thread

EagleShield wrote:
My last arriving uTorch UT01 NW 5000K 3D from Gearbest was different from the earlier UT01 NW 5000K 3D I got…… …..and the light had a ugly greenish tint (in my opinion if I compare the one that I had before and the new one). At least with the old one a white wall was white when I shine on it.

I hope the UT01 I have arriving from GB doesn’t have ugly green tint, I could deal with the Convoy 4C comparative but not the green. Also hope I get a good switch.

I’ll be looking for feedback to see how this Lumintop version pans out, I really like the tail magnet.

.

I ordered the UT01 as an alternative to an 18650 light that’s about the same size with about the same output (DQG Tiny 4th)

DQG Tiny 4th: 86mm x 22mm (850lm)
U-torch UT01: 84mm x 19mm (800lm)

.

I was afraid of the smallish size, non recessed button on the DQG, I’ll be sacrificing a lot of battery capacity but the UT01 appears to have a larger button, plus it has a reflector and the nice programmable UI. Although I’m really impressed by the size of the DQG, being it’s about the same size as a 14500 light.

I have the DQG 18650 Tiny 1st version (Twisty) and like it, and unlike many others have reported, I’ve had absolutely no problems with mine whatsoever.

"Over 2000000 hours (about 200 years) standby time"  (DQG Tiny 4th)

"27,157 results for zoomable flashlight" (ebay)

 

 

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Maybe I mistake the green tint for the warmer light (I don’t have any light warmer then 5000K) so I opened the box and checked it again.

Externally the only difference is that the new UT01 have smaller text on the tailcap.

The new UT01 to the RIGHT.

Did some beamshots with my crappy Chinese phone camera just to see the difference.

The new UT01 to the LEFT.

Hard to see with bad pictures but you clearly see a difference.

I can’t do single beamshots of each flashlight to shine at a white cealing since the camera autofocus would ruin them.

Decide for yourself but that new UT01 went back in the box.

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waiting for mine to arrive from Gearbest, $9.99 What are the chances of getting one with a good switch? From all I read I’m a bit paranoid. But I love programmable lights.

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