Excellent review. Good to see this because I just now ordered the DarkBeam online with the black friday discount .(2024) Im glad to have chosen the 365/395 option since i have enough white light devices. Thanks for your technical savy. (you have some very interesting test gadgets, better than the analog equipment that needed constant calibration).
I have no way to measure that so can't answer accurately. You can look up the specs online for claimed lumen outputs, but the best I can do is show video of it in operation and let you judge from that.
A single (365nm) UV light had a runtime of 3 hours before starting to dim. It took around 5 watt hours to re-charge the flashlight (~1,000 mAh at 5 volts), so the battery capacity is probably in the 4 - 4.5 watt hour range.
It is 365 and 395 nm, not 160-240 nm, so it should not create (much) ozone and probably doesn't kill (much) bacteria. [On the plus side, it is more "eye-safe" than true shortwave UV.]
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Excellent review.
Good to see this because I just now ordered the DarkBeam online with the black friday discount .(2024)
Im glad to have chosen the 365/395 option since i have enough white light devices. Thanks for your technical savy.
(you have some very interesting test gadgets, better than the analog equipment that needed constant calibration).
How many lumens does it have
I have no way to measure that so can't answer accurately. You can look up the specs online for claimed lumen outputs, but the best I can do is show video of it in operation and let you judge from that.
How about battery life?
A single (365nm) UV light had a runtime of 3 hours before starting to dim. It took around 5 watt hours to re-charge the flashlight (~1,000 mAh at 5 volts), so the battery capacity is probably in the 4 - 4.5 watt hour range.
Does it create ozone? Kill bacteria
It is 365 and 395 nm, not 160-240 nm, so it should not create (much) ozone and probably doesn't kill (much) bacteria. [On the plus side, it is more "eye-safe" than true shortwave UV.]