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Wurkkos
  1. chaosdsm

    UVC or "deep UV" flashlights?

    Not sure what it is, haven't had time to try & lookup what I have just yet. This one is actually a rock my mom brought with us when we moved from California to Florida :laughing: IIRC, it has both mica and milky quartz, not sure what else might be mixed in there. Filters I have are both...
  2. chaosdsm

    UVC or "deep UV" flashlights?

    Whatever you go with, I suggest adding UV filters to them... For minerals I use Convoy S2+ with Nichia 365nm (18650) and a Tattu U3S (26650) which is advertised as 365nm but doesn't work well without a UV filter added, too much visible light spill. I have a supposed "UVC" light (not LED) but...
  3. chaosdsm

    Recommend me a replacement for Convoy L6

    Wow... that was it and it was less than half a turn loose too. Guess I'll put some thread locker on there. See a few things that pique my interest at Lumencraft :) and the L7 looks good too (shows available on AliExpress).... decisions decisions decisions....
  4. chaosdsm

    Recommend me a replacement for Convoy L6

    My Convoy L6 (purchased in 2017), I turned it on, it flashed for about 1/4 second and now it's just dead. This is the first and only flashlight I've ever used on a daily basis. I used it at night to illuminate the entire property while investigating odd noises, in my room on low on top of a...
  5. chaosdsm

    4AAA - C cell & 3AA to D cell adapters & Eneloop Pro LSD charging?

    No, my real question was just as it says in the bold blue text in my original post... which would be best for the batteries. I'm not worried about the adapters. 1 D cell adapter holds 3 AA batteries.... therefore if I'm charging 24 batteries at the same time, I'm using 8 adapters ;) No...
  6. chaosdsm

    4AAA - C cell & 3AA to D cell adapters & Eneloop Pro LSD charging?

    I did a search, but the newest topic I saw was from 2012. I had some Eneloops out in my shop, but roof developed a leak in the past 6 months and they got pretty wet. I just got 8pcs 4P AAA to C cell adapters & 12pcs 3P AA to D cell adapters from Amazon to use in lights & radio's that use C or...
  7. chaosdsm

    Recommend me a quality UV flashlight under $80

    One place the S2+ does fall short of the Tattu is in distance viewing. I can illuminate the field of stars on my US flag from about 38 feet with the Convoy S2+, but with the Tattu they illuminate out to about 62 feet. In both instances I have to turn the flashlight on & off several times to...
  8. chaosdsm

    Recommend me a quality UV flashlight under $80

    Looking at spec's, it seems the ZWB1 filter (around 90% UV transmittance & cutoff at about 398nm) would be much better than a ZWB2 filter (around 75% UV transmittance & cutoff at about 403nm), or am I missing something ??? I found and ordered a ZWB1 filter for the Convoy S2+, but could not...
  9. chaosdsm

    Recommend me a quality UV flashlight under $80

    It fits my hands very well, I like that it fits both protected and unprotected 26650's, though some of the longer (70mm+) protected cells might not work. I also like the brightness, but don't like the dark spot in the middle. Definitely want to see how it compares with the Convoy S2+ which I'm...
  10. chaosdsm

    Info on a 26650 battery please

    Seems to be, found this: Normal capacity 5000 mAh/0.5C Minimum capacity 4950 mAh/0.5C Normal voltage 3.6V Charging voltage 4.2 ±0.05 V Discharge ending voltage 2.75±0.05 V Standard charging current 0.5C(2500 mA) Standard discharge current 0.5C(2500 mA)...
  11. chaosdsm

    Info on a 26650 battery please

    Just got a Tattu U3S 365nm UV flashlight in the mail yesterday. Included with the flashlight was a 26650 battery in a plain black heatshrink with no writing on it. Curios to see what kind of capacity it had, I put it in my Opus charger and ran a discharge capacity test on it, and the Opus...
  12. chaosdsm

    Recommend me a quality UV flashlight under $80

    I overlayed the two graphs in Photoshop Elements and discovered that they are indeed almost the same. The graph in red is the Nichia, the grey is the Marktech. RE: filters, are there any brand names I should avoid on the ZWB2 filters? I see a whole bunch to fit the S2+ ranging from $1.91 to...
  13. chaosdsm

    Recommend me a quality UV flashlight under $80

    I ended up buying both the 26650 based Tattu 365nm U3S, and the Convoy S2+ Nichia 365, $86 combined after shipping & taxes. The Tattu should be here tomorrow, the Convoy S2+ next week. Here are the graphs I found from the Marktech datasheet for the Marktech 365nm 7.8V UV LED:
  14. chaosdsm

    Help: Need battery upgrade for outdoor solar light

    All finished and works great! 3 days in a row, light has still been on at dawn, though it did appear to my eyes to be somewhat dimmer on the 3rd day. As the nights get longer and longer, I don't think the 2900mAh cells will be enough to run a full night every night through December 7th...
  15. chaosdsm

    Recommend me a quality UV flashlight under $80

    Hm... never heard of them, but I see the U3S uses 26650's and claims a 10W 365nm emitter, though they only list the light as 80 lumens??? Also seems odd that they would have strobe and SOS modes on a UV flashlight.... I'm diggin the Convoy S2+ UV, I absolutely love my Convoy L6, I'm finding...
  16. chaosdsm

    Recommend me a quality UV flashlight under $80

    I'm looking to get a a good all-around UV flashlight for multi-purpose use. I only have a couple of requirements for the flashlight: Must run on one or two 26650 (preferred) or 18650 batteries. Minimum 3W 365nm emitter Under $80 shipped Prefer a beam with minimal hotspot Prefer a single...
  17. chaosdsm

    Help: Need battery upgrade for outdoor solar light

    Okay, so the plan is: > purchase tomorrow: one - Keystone 1048 (PACK OF 2) Dual 18650 battery holders with gold plated contacts from Amazon. > cut existing wiring to batteries since the current batteries are hardwired > solder the existing wiring leads to the new holder > use a pair of...
  18. chaosdsm

    Help: Need battery upgrade for outdoor solar light

    Finaly ready to upgrade the batteries in my solar powered outdoor light (5.2V 10.5W panel output on a good clear day). It currently has two "SLM-CT 3.7V 2400mAh" 18650 batteries installed in Parallel from the factory. There's room in the battery bay to install 3 batteries. So which is my...
  19. chaosdsm

    I don't trust Orbtronic anymore, what else should I use?

    You mean this review: Not what they used to be The new 3600mAh cells I purchased don't even last as long in my headlamp as the 3400mAh Orbtronics cells I have that are several years old with 500+ charge cycles on them. (using the same light output mode). That is very disappointing. Would not...
  20. chaosdsm

    Solar charging 18650 on the AT light weight hiking

    I'm not sure of the actual output of the panel I posted above, I cannot get an amp reading off of my DMM, but it's hitting 4.32V in full shade (roof overhang), 4.60 - 4.85V in partial sunlight (est 30 -70% shade coverage) & 5.37V in full sunlight. I also charged a second 5200mAh 26650 by USB...
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