3_gun
Enlightened
- Joined
- Jun 27, 2021
- Messages
- 690
So for shoppers new to the LED world of lights it really is "take what you read (on boxes) with a grain of salt". The figures are wildly misleading and/or out right fraud. 50,000 hour bulbs are to 50% of the claimed output not a constant level till they burn out. No one graphs how quickly the drop happens. 500hrs to a 10% drop? 50 hrs to 10%? All we know is the start & end points, what it looks like between them is a guess.
The lights being built today are amazing & a 4000L light that still can produce 2000L (a level undreamed of 20yrs ago) after 50000hrs beats the hell out of 100L for 35hrs from a xenon light. Except the xenon light really gives you 100L for 35hrs.
Happily some makers realize that truth is better than fiction & clearly state run times broken down by level & time. Others graph fairly close to the truth but you have to watch for changing scales within the graph, making a steady decline look closer to a level output. Other test batteries that give better performance but are less likely to be used by the end user. But someone who just want to buy a new, good light is more mislead than helped by the FL1 standard.
Joke 1; Turbo & "high" lumen levels. The claimed output is supposed to be the level recorded at 30sec from ON with a fully charged battery. Seldom happens outside of 3rd party testing. Few (none?) of the mass produced lights hit or holds for 30seconds the peak levels claimed. A few will use a timer rather than heat regulation to get them to or past the 30secs at or near the claimed numbers. This doesn't always work in their favor as lumens at 30sec is used as a starting point of the second FL1 joke
Joke 2; Run times. All turbo & high run times are fiction. Reported run times aren't at a constant level as many charts & graphs seem to imply. Add in battery $ light differences from build tolerances + how you use the light & you're lucky if you even get 70% of the claimed run time at a claimed level. This even carries over into mid range light levels but not as badly. If you really want/need run time at a certain output, find that level in a mid range output not turbo or high. Look for regulated lights/levels, you'll have a much better chance of getting closer to claimed levels.
Reported run time is supposed to be the light level at 30sec (see above) until it drops to 10% of that number. So a light that claims 3000L at start, drops to 1700L @ 30sec would only be putting out 170L at the end of the claimed run time. And don't expect much run time to be left at 170L if the light held any serious output before dropping to 170. You may get 15minutes before the next big drop. So much so that a 60hr claim at low. It may only be an hour or so after a run on turbo. {a cooled 4000L turbo run, 35mph@30degreesF has a 5000mah 21700 at LVP in 20minutes}
Joke 3; Throw. The claimed ranges are at a light level that shows little to no detail & shades of grey in place of colors. Yea you can make out a shape & size but little else. General rule I've adapted is cut the claimed throw by 1/3 at least if you want to see details & colors. Light temp/color/beam shape all are factors in what you'll really be able to identify at distance. Be honest about the distance you need to see at also, 25 yards lit by a flashlight is farther away than you might believe. Plus the vast majority of users are seldom going outside while using the light. Throw needs to be a level of vision (in feet) not a measurable increased light level at 1/4 mile.
FL1 is better than nothing BUT the truth behind the numbers reported is so so much more important than the numbers. Claimed light levels may not really be useful levels, run times are seldom at level outputs & distances reported doesn't mean you can really see anything other than there's something there.
We deserve better
The lights being built today are amazing & a 4000L light that still can produce 2000L (a level undreamed of 20yrs ago) after 50000hrs beats the hell out of 100L for 35hrs from a xenon light. Except the xenon light really gives you 100L for 35hrs.
Happily some makers realize that truth is better than fiction & clearly state run times broken down by level & time. Others graph fairly close to the truth but you have to watch for changing scales within the graph, making a steady decline look closer to a level output. Other test batteries that give better performance but are less likely to be used by the end user. But someone who just want to buy a new, good light is more mislead than helped by the FL1 standard.
Joke 1; Turbo & "high" lumen levels. The claimed output is supposed to be the level recorded at 30sec from ON with a fully charged battery. Seldom happens outside of 3rd party testing. Few (none?) of the mass produced lights hit or holds for 30seconds the peak levels claimed. A few will use a timer rather than heat regulation to get them to or past the 30secs at or near the claimed numbers. This doesn't always work in their favor as lumens at 30sec is used as a starting point of the second FL1 joke
Joke 2; Run times. All turbo & high run times are fiction. Reported run times aren't at a constant level as many charts & graphs seem to imply. Add in battery $ light differences from build tolerances + how you use the light & you're lucky if you even get 70% of the claimed run time at a claimed level. This even carries over into mid range light levels but not as badly. If you really want/need run time at a certain output, find that level in a mid range output not turbo or high. Look for regulated lights/levels, you'll have a much better chance of getting closer to claimed levels.
Reported run time is supposed to be the light level at 30sec (see above) until it drops to 10% of that number. So a light that claims 3000L at start, drops to 1700L @ 30sec would only be putting out 170L at the end of the claimed run time. And don't expect much run time to be left at 170L if the light held any serious output before dropping to 170. You may get 15minutes before the next big drop. So much so that a 60hr claim at low. It may only be an hour or so after a run on turbo. {a cooled 4000L turbo run, 35mph@30degreesF has a 5000mah 21700 at LVP in 20minutes}
Joke 3; Throw. The claimed ranges are at a light level that shows little to no detail & shades of grey in place of colors. Yea you can make out a shape & size but little else. General rule I've adapted is cut the claimed throw by 1/3 at least if you want to see details & colors. Light temp/color/beam shape all are factors in what you'll really be able to identify at distance. Be honest about the distance you need to see at also, 25 yards lit by a flashlight is farther away than you might believe. Plus the vast majority of users are seldom going outside while using the light. Throw needs to be a level of vision (in feet) not a measurable increased light level at 1/4 mile.
FL1 is better than nothing BUT the truth behind the numbers reported is so so much more important than the numbers. Claimed light levels may not really be useful levels, run times are seldom at level outputs & distances reported doesn't mean you can really see anything other than there's something there.
We deserve better