I keep about 10 in each of my cars just in case I need something to lay down on the road if I run out of flares. I also have 3 flashlights in each car but I’m not laying those out on the road
I also keep a bunch in my earthquake supplies just to use as a last resort. If we have to walk somewhere in the dark I figure I can attach the glow lights to the back of family members to be able to track them easier.
I had some expensive camping coleman glowsticks and they barely last 6 hours but some cheapo glowsticks i had lasts more than 9 hours before dying into moonlight mode.
i got mine from a store in Malaysia called Mr. DIY
pretty darn bright when using it. dropped in useable brightness after 9 hours
after 18hours (tonight as i type this)
still emitting a faint glow but only in darkness
lol I just realized I repeated the same sentence twice…
I replaced my car’s emergency lightsticks with these. Pretty cheap in comparison, and with that price I can afford to swap out yearly. The original (came with the car) was 3 years old, and barely lit when I snap it.
I can not help the notion that if you use light indirectly to repeatedly charge a phosfor to make it glow, you would have got more light (less conversion loss) if you just let an efficient (if you like the GITD colour, use a green or lime one ;-) ) led do the lightmaking work continuously....
I have to wonder about the difference between GITD pigments, and phosphor used in normal leds, ive been thinking about some remote phosphor/GITD using a uv led instead of the royal blue that regular leds use
My daughter likes the one that are sold as bracelets and they seem to last a ton longer than I remember. most are dead after 9ish hours, but some are moon light bright for a day or two afterwards. I can not help to think that temperature they are stored at might have something to do with how long they are good for. I know that being exposed to light causes them to break down.