Alonefire SV84 UV Light Just Received

This is a soda can light with four 18650 batteries. Tried charging on my USB C high current capable charger with voltage and current monitoring and the USB charging port is dead. Tried on another charger with the same result. Charging indicator light on the flashlight also not functional. Batteries charging OK on an external charger and arrived with about a 60% charge per the external charger. Light itself functioning correctly so far as I can determine considering that it arrived with absolutely minimal documentation. and it does seem to be a quite powerful UV light. The 18650 batteries are absolutely minimal capacity at a claimed 2000 MaH, ridiculous for this size battery. No indication on the batteries of maximum continuous current capacity either.

The bezel unscrews and the UV filter can be removed if desired. No other front glass so if the filter is removed the LEDs are exposed. This has four LEDs, each with 4 dies visible.

Needless to say I am not too impressed with the quality of the light or Alonefire’s quality assurance. Overall about the cheapest built soda can light I have seen in 10 years of purchases.

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It’s one of ‘those’ brands. I have no expectations of their quality, neither will I ever buy one from them. Even for 5 bucks a pop they are not worth the price. Sorry for your loss.

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1LUMEN gave several of their lights decent performance ratings in their UV flashlights review so I figured worth a try. I have multiple older soda can lights without the USB charging so used to having to remove the batteries for charging. But also a retired quality assurance engineer so I find quality issues annoying.

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Turns out that there is a compatibility issue with the SV84. Charging works with a USB A to USB C cable and the USB A output of a current generation high wattage capable charger that has one but not with a C to C connection. Weird!!!

I think that C-C charging was an issue with other flashlights in the past, so I’m not surprised that this only works with USB A to USB C.

I have not run into this before though I note that the light’s circuitry only takes a charge at the USB 2.0 rate so the circuitry in the light may be too old to recognize and handshake with current USB C protocols.

The original BLF lantern didn’t support USB-C to USB-C charging. I remember the heated debate about that when the LT was being developed.

Learn something every day. I had no idea there was a difference.

The latest version of USB C chargers can charge at multiple voltages from 5V to 20V and at power levels up to 100 watts or 5 amps at 20 volts. The latest specs go even beyond that, up to 48 volts and 240 watts. The EEC has made USB C a requirement for newer rechargeable small devices I believe.

Yes, 1Lumen’s review is what made me decide to try the SV84 today. He said that while the quality of the light itself looked better than most, the included batts were junk so I will get rid of those.
As far as the possible USB charging situation, I always charge my batts outside of the light so
that’s not a problem . Amazon had a decent price and it gets here overnight. Have few
others but per 1Lumen’s review, this had the strongest output so it should make it a little
easier to spot our “scorpion neighbors” here in AZ.

Have to give them some credit, two days after received this light, I accidentally dropped it and it fell head first onto a tool I had laying on the floor which, cracked the filter. I wrote Alonfire asking if I could purchase another filter. They responded the next day thanking me for buying the light and said they would send me a new filter at no charge and they did so the next day. Pretty decent customer support.

And here is another victim of the 1Lumen’s review. lol. My child wanted a UV torch cause he wanted to go find uranium in the local charity stores (theres blimmin heaps) to sell and I had no idea wth I was doing so purchased the one that he had asked for after I read the review.

After doing a little research… :thinking: :face_with_spiral_eyes: :expressionless_face: I realised coming to a forum I learnt more in the few hours I sat here reading and rethinking my choices of saying yes to my child who didnt do jack all research into this subject. eyes rolling.

I am asking the experts in here, your opinion on a decent not so standout sized UV. Let me know what you all use and why you have that particular one. PLEASE and THANK YOU. I’ll be doing a little more research. fyi Have no idea where everyone is from but I am in New Zealand (NZ).

I like:
Lumintop Tool UV
or
INNIGHTOOL UV
or
Convoy S2+ UV
I think all of these require a stand alone charger. None of them are super strong but all work well and should be fine for “charity store” purposes.
I am NOT one of the “experts” here…
… A little further research suggests that 395nm may be better for uranium glass but I don’t know.

YAY Thank you for your input. Child is getting a 395nm off his Uncle tonight, I’m not sure i’m prepped for the conversation yet to keep up with him as hes a fisherman that uses lights as well (way over my head at the moment). The fishing conversation I can keep up with but not the lights he talks about, im easing myself into it. Cheers have an awesome day.

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Welcome to BLF!
Are you familiar with the term “rabbit hole”? You may have just entered one…

Thank you. So much learning to be had.
Yep sure am familiar with it, try not to live down them too long. lol.

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