Review : Utorch UT01 Flashlight (XP-L V6 / AA & 14500 / e-switch)

LED Flashlights – General Info 1 x AA / 1 x 14500 Flashlights
2

12/11 added Medium mode (on AA) runtime
12/11 added Intensity measurements
12/19 added Lumens using Nihm and how to program output levels

3

Waiting for the updates and your overall impression Giorgos. :slight_smile:

Please specify if you can the max battery length that can fit in it.

4

Overall impression is really good :slight_smile: Very small light , capable of great output , for a small time of course ( limitations are : the capacity of the cells and of course the small mass of all the lights of that size )

Edit : longer cell i have is 50,6mm and works fine .

5

Very nice, thanks for the detailed review!

Any idea on parasitic drain from the e-switch?

6

“_High (Efest 14500) : 42 minutes (until first “LVP” warning)
When battery voltage is below 3V drops to the lowest mode

High (Eneloop AA) : 55 minutes (until shutdown)
When battery voltage is equal or below 1V shuts down_”

Is it common for the LVP to keep on draining an unprotected Lithium Ion battery while a NiMh cell is simply shut down via the same LVP?

7

Thanks for the review! A few questions for you:

  • is there a lock-out feature, so that it won’t turn on in a pocket?
  • can you give us just a brief qualitative description of the mode spacing both with a nimh and a 14500?
  • does it seem to have fairly flat regulation (output remains fairly constant) or does it dim gradually?
  • how slowly do you have to single-click to change modes, without accidentally engaging the strobe modes?
8

How much PWM with this one? I would also like to know if it has a lockout mode.

Thanks Matt

9

Syrbuff has a youtube review on this light.

10

sb56637 , as i mentioned on the review it it 0,014mA .

Freedom , it is designed from the factory like that i guess .

peteybaby , No there isn’t lock out mode . It has a fairly good regulation , no visible dimming , until battery is not able to provide the required current of course . Only if you press the switch for a second time exactly after you release the switch it enters strobe .

mattlward , i will measure PWM frequency tonight .

11

Thank you George.

12

No lockout mode? I thought the light would lockout if the head is half turned?

13

Yes , this is phusical lockout (if light has anodized threads , as ut01 has).

14

Thank you for all the info giorgoskok.

15

Would you know the lumen values for the different modes?

I might get a couple more while the price is good, if the spacing is to my liking.

Thanks

16

I’ll give you an estimation :

Lowest - 10-25 lm
Low - 70 lm
Medium - 270 lm
High - 775 lm

17

A little bit disappointed, :frowning:

18

OP updated with runtime for Medium mode , with AA .

Why , if i may ask ?

19

Just saw your edit.

Since a 50.6mm cell fits & works, I don’t see why a 50.5mm protected XTAR 14500 wouldn’t. :wink:

Do you have any XTAR 14500s (or any other 14500 protected of about that size) to check if they fit?

20

I have the same cell you mentioned (xtar 14500 protected) , and it’s actually longer (50.9mm - 51mm) and it doesn’t work .

21

Can you just remove the protective pcb to make it fit?

I have several of those in transit to my place.