Imalent DX80 Gen2 .. need help to test for faults

I need some help testing the DX80 since I ordered one

Thought I would start a new thread here on fault tests for it to test mine, when it arrives, and make sure it is not one of those that spark! I read the info below on the Bangood forum about the gen2 having the same problems and someone posted a test to see if it smokes and short circuits. Below is the info I read there that someone posted.

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Currently the same electronic burn out happened with 2 ldifferent ights at the same location in the lamp head.

After burning there is a shortage. And the Lamp and the battery could eventually burn in a fire... This is a very dangerous issue!

Could test it this way:

1) switch the light on (to medium or high)
(2) lock the switch)
3) unscrew the battery tube a little bit, so the circuit is open
4) immediatelly afterwards attach it again.
5) now there will be a flash + pop + smoke + shortage....

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The question I have is....... is this the right way to test for faults or is this test a way of actually screwing up the light? I am no expert

but it seems like that could be a dangerous way to do it, or maybe just a dumb way to toast the light, but I don't know for sure.

Are there any other tests that a guy like me with not much experience can do to determine its quality?

Don’t do it indoor, and put on protective gears to protect hands and eyes.
Please report here when you have the result after you receive the light.

Wasn't exactly the answer I was looking for! Is that test really a good test or a dumb way of destroying the light, that is what I was wondering? My thinking is that anything with some high power could spark if you cut the circuit by pulling the battery and then connecting it again, that is why I'm not sure about doing it. I could just leave it alone if everything works like most people I guess.

I thought about it before i answered you.

My reasoning was that if we bought a new TV, do we switch it on, and test it by switch off its main power abruptly. We don’t, or most people don’t. But this sudden power cut out happens during electricity outage or lightning strike and circuit breaks. It’s just an example, i don’t test everything i bought crazily.

For DX80, since you mention there was case it failed 8n certain way, i think there might be chances you drop it and its battery contact disconnect momentarily or while you disconnect the battery tube but press on its switch accidentally. So i think you should test it while under warranty.

If you think those scenario won’t happen at all, then you can skip all these and enjoy your light.

Or you can investigate further why people found this method to test DX80. Is it accidental or he occasionally switch off and on flashlight like that.

I did test some of my flashlight to see whether they will remember the On state.

If you go to a doctor and tell him it hurts when I do this.

He will likely tell you not to do that :slight_smile:

lol, yep, I was thinking the same thing. Going to enjoy the light if it works rather than worry about it. Most people love it and I am not sure how many units they sold but I think it was a lot of them and if I search youtube, not really much problems to speak about so it may just be a pretty reliable light. I am going to use it a lot and keep posting on this thread if I have any issues over the months and years or not as a good way to monitor it for others to know.

A guy on the banggood dx80 site posted it but not enough info to follow through really. This light has so much power that I may just leave it alone for testing and hope for the best.

Banggood has a 3 day DOA policy: Help Center
Last time I checked this means that only within this three day period will Banggood refund shipping back to China. Outside this period you have warranty, but you have to pay for shipping yourself, which costs around US$30~40. Something like that, no doubt it depends where you are.
So I always test my new lights within this three day period.

The problem you have described in your first post was from the first batch. Someone here posted a picture as well. I have not read about this problem since Imalent released the second batch.
A similar “test” is also done here (which was a problem in the past), check out at 5 minutes 0 seconds: The 32,000 lumen Imalent DX80 Flashlight Review & Full test of the brightest torch yet. - YouTube
The only structural recent problem I’ve read about is that the display does not work; the light is fine.

I personally would test if charging terminates automatically when full. I think you can use a DMM to check voltage. 4S2P configuration, so max voltage should be 16.8V.

Good luck, and I hope you have no problems! :partying_face:

Thanks for the help hiKARInoob! Thought I will be left in the dark with this one lol. You lost me on the 4S2P configuration, not sure what that means or how to go about it. I have a DMM but how would I test the max voltage on that battery pack. After the charger says its full, do I just unscrew the battery pack and check voltage that way?

Gearbest has a 7 day DOA period: https://www.gearbest.com/about/warranty-and-return.html#item3

There are eight pieces of 18650 cells inside the battery pack (Samsung 30Q). These are arranged four in series, resulting in 4 x 4.2V = 16.8V. And two of those parallel, so voltage remains 16.8V. This is the maximum (ideal) voltage when fully charged. Minor difference is of course possible.
The centre metal plate of the battery pack is the positive, and the outer metal edge is the negative. So have your DMM set for DC voltage, and put the red probe on the centre positive, and the black probe on the outer metal ring of the battery pack.
After fully charging the DX80, the OLED display should read 16.8V. If you remove the battery pack, you can check whether this value is correct. It’s just a simple test that you can do.

You always come right to the point and detail it out so a noob like me can understand. What can I say except a big thanks, that is all I needed to know to get the job done. Really appreciate the help on this.

I should have read the whole DX80 thread as all the answers were there! Next time I will search and read more before posting. If there is a way to delete this thread, please do mods!

Cheers and don’t worry about this thread. Information is scattered throughout this forum; some people complain about their DX problem on Gearbest’s sales thread only. You’ve probably read this by now, but there is also a structural problem with the XHP70.2 emitters only lightening up partially, like only half of the emitter. It’s a really odd defect.

Cheers, ok I won't overthink it then lol. Yes, I read about the problems. I wonder if it is just a defect from Cree itself? But I don't think I have read anywhere of that problem with other flashlights using the 70.2

Exactly. The interesting thing is that it’s a problem (half lit emitters) only occurring with the DX80. If it were a bad batch of Cree leds, then surely it should have been picked up by led gurus on this forum, as well as reports found of other manufacturers suffering from this bad batch. This is not the case, so I suspect it’s Imalent not doing something right. Probably incorrect reflow procedure (of the leds to the led board).

I would suspect the same. They must be aware of it as it seems to be somewhat common with the DX80. I thought they got a new manufacturer for the updated version but maybe they didn't. Maybe it's as simple as turbo mode creating too much heat and as a result all odd problems start surfacing. I've seen the youtube video where the DX80 in turbo mode sets paper on fire almost instantly.

My take on the entire DX80 thing is that this is very high performance light.
As such, not only are high quality components critical, BUT,
The workmanship during assembly has to be painstakingly and fanatically excellent.
Anything short of that will lead to failures.
Lessor workmanship would get by with low performance lights, but not this one.
I suspect the flaws come from poor assembly practices.

I agree and failure rates have to happen on anything, especially something like this because one way or another humans are involved. I've scanned youtube and the web and still I don't see too many people saying they have problems with the DX80. Curious six more months from now what pops up. I've been lucky so far that none of my flashlights cheap or high end have had any problems yet.

The DX80 i received has the XHP70.2 lets, so far it works great with no issues. Where is the link to the thread where one has shorted?