ALONEFIRE SV71 365nm UV Flashlight Strong 15W USB C Rechargeable Black Light Money Detector for Resin Curing, Pet Urine, Scorpion, Fishing, Mineral, Rocks, Glue with UV Protective Glasses, Battery

Definitely delivers a good amount of power. This is my first proper UV light, so I didn't know what to expect, but I was hoping I wasn't going to get a way over-sold power figure LED and get like 1 Watt of actual output. I have no way of measuring, but this I'm happy with the output, it's strong. I did notice that when it is on high it doesn't take very long to thermally de-rate down to a lower power. Since I'm new I like to run the light for a long time just looking around, so I kept noticing it step down once it got hot. On low it can run for a very long time. Battery seems pretty large, I didn't need to charge it very often. 5000 mAh Li-ion and I like how it's in the proper 26650 format. I also like that it has on-board charging.All seems to work well! Now that I've had a look around my world with 365 nm UV light everything looks really strange under UV! Very cool!

This puts all other UV lights/flashlights I've used to shame.Even with the protective glasses, it can cause eyestrain on the higher level, so I try to limit usage to quick forays when needed.

So far this is a great little UV flashlight. It is a little larger than I expected but is comfortable in my hand. I don’t use it often but it is great for my needs and it’s fun to have a look around the house at night. A lot of stuff shows up that would never know was there, some of it you just don’t want to see. It seems well built, it takes a bit of time to charge but it’s a big battery and I haven’t had to recharge it yet. I had a much larger UV flashlight that just stopped working even though the battery was fully charger. I hope this little guy lasts a lot longer. Only time will tell.

I purchased multiple black lights to identify different gemstones, uranium glass, Amber, etc..This is by far the best one out of five that I purchased.. Way surpasses any of the LED black lights that could supposedly identify gemstones etc.. this one actually can! The filters are definitely a big plus point..It's the only one I didn't want to return.

Very serious UV be sure to wear protective eyewear.

I really like that this is rechargeable. UV flashlights are really cool for detecting scorpions, uranium glass, air conditioner leaks, pee (and other gross liquid) stains, and lighting up your velvet Elvis painting. Plus, it's really fun to turn off the lights in a room and fire one up just to see what lights up. It's nice that it comes with the protective glasses too, as this is VERY bad for your peepers.

Build quality is good, no complaints there. The battery is an odd size, br26650. It's okay I suppose, just not as common as the 18650. There is an adapter included though if you want to use an 18650 battery. No o-rings on the cap either, so I don't suggest getting it wet.I chose this light because it has a wide body, so I thought maybe it would have a nice flood beam. That wasn't the case. The beam is more of a spot. Not really useful for my purposes.The two brightness levels are a nice feature, but the light doesn't stay bright for long. After a couple minutes the light dims automatically to protect itself. Again, not really helpful.Overall, I'd suggest looking elsewhere. A durable build, but lacking usefulness.

I had a low-power UV light that sufficed for spotting leaks in the car’s A/C. Cheap but good enough, bought as part of a toolkit. When I tried it on some UV-curing paint, the result was a lengthy wait of 20+ minutes. By comparison, this flashlight cures the same paint, in the same thickness within two to three minutes. Much more powerful light, for sure. And as a result it does heat up, pretty quickly, and automatically reduces the light intensity after being on 2 to 3 minutes. The yellow glasses that come with it seem flimsy, I do hope they provide enough protection for the eyes from damaging levels of UV as I have already used them for several minutes with the flashlight. Definitely do not aim the beam directly to your or someone else’s eyes, even with the glasses on.The build feels real sturdy, all metal. Smooth working threaded cap for the battery compartment. The two USB ports are covered with a rubber flap, not sure whether this is waterproof. The main switch provides for two light levels, with each press it cycles from “Off” to “High” and then “Low”. Weird that the high light level is first, but not really an issue. The provided battery fits tightly and securely inside the flashlight’s body, have to make sure the polarity is right (plus end towards the front of the flashlight) as both ends of the battery are flat. There is a plastic tube adapter provided, inside the battery compartment, but I do not know what kind of battery this adapter would fit, and the instructions do not tell. I like that this flashlight can be used as a power bank: if I have to carry it around with such a large battery, better be able to tap into its power capacity if needed for something else, like for charging the phone.The instructions are really brief and are omitting info about usable batteries for this flashlight.