Yezl Q4 - 3 x T6 Diving Flashlight [Short Review]

LED Flashlights – General Info 26650 Flashlights
1

Hi,

Recently I have received my Yezl Q4.

Some info from the companies site: http://yezl.com/en/ProductShow.asp?ID=300

I will post some photos of my own a little bit later as I don’t have time right now :frowning:

Here is a short review:

First, I ordered it from Yezel’s Aliexpress store, via china post, where it took 1 month to actually receive it.

The torch was well packed in a big box with foams inside.

Flashlight’s Build:

Cons:

- Low quality Aluminum

- Low quality CNC work - the threads are “not smooth” as they should be

- The side of the front glass came a little bit broken

- The head is being screwed badly and not in the middle

  • All 26650 Batteries (King Kong ICR and IMR) I tried to put inside got stuck, and made me to unscrew the head a littble bit to take off the battery.

Pros:

- It is very small

  • A good Plastic ring for switching between the modes

Light Output:

I wish I could measure the current and the Lumens but I don’t know how (maybe you could help).
But what can I say is that:

- A LOT! of spill and a HUGE hot spot (very bad for me :frowning: as I needed a thrower) )

  • A very weak light, I would say it is 1100lm, not more than that - Maybe I shoud change the driver - what do you recommend?

[Photos will be uploaded a bit later]

Thanks for reading,
HiTiT.

2

darn, in the website pics, it looked pretty dam bright. and yes i did notice that huge hot spot and spill.
and im glad you confirmed this. i like big hot spots and spill. but only 1100 lumens. eh, ill have to pass unless someone can figure a mod for it. how much you pay?

3

Hmm...Yezl claims 2580 lumens which is an oddly specific number to claim. I can't see a single 26650 cell providing anywhere near the juice to make that much. The 1100 you got sounds more like it but closer to 1800+ would have been a lot nicer.

In this pic it looks to be sitting on a C8 reflector. That's a small reflector for 3 LED's to sit inside. No wonder the hot spot is so large.

4

Yezl Q4 at CNQG

that has a magnetic switch ring, so the driver has hall sensors. You would need a specialized driver to swap that out. I've never seen compatible ones sold.

taskLED sells some (example). Guys have done dive light builds with them.

Have you used this light much? I expect the switch components to rust out.

Digital Multimeter. This is from HKJ's site.

and this link explains how to do tailcap current measurements.