how come in uk the same flashlight is 800 lm and in us 1000 lm? To get 1000 lm do you use special battries?
194578
Not sure of the reason for the variance. From what I understand, if you use rechargable lithium batteries, you'll achieve maximum lumen output.
2066255
Sorry I don't know. Because rechargeable batteries slowly lose power even when not used, and my flashlight gets used mostly for widely spaced emergencies I use standard batteries.
1219509
Lumen measurements for any flashlight/light source are meaningless unless you have the raw data.This flash light with the "zoom" at max spread, from a distance of one foot, with a coverage area of 1.5 feet, using quality 3.7V 18650 Li-Ion bats:High Mode:*Initial lux 4800~4900 (450 lum sq/ft)Med Mode:*Initial lux 2600~2750 (250 lum sq/ft)Low Mode:*initial lux 680~720 (65 lum sq/ft)Multiply these results buy 1.5 to get a more accurate lum sq/ft number.Focused to a point at 1 foot, well over 90,000 lux (bright as the sun), but that's what makes it great. You get that visible light WAY out long away if you need it. Lumen measurements for any flashlight/light source are meaningless unless you have the raw data.This flash light with the "zoom" at max spread, from a distance of one foot, with a coverage area of 1.5 feet, using quality 3.7V 18650 Li-Ion bats:High Mode:*Initial lux 4800~4900 (450 lum sq/ft)Med Mode:*Initial lux 2600~2750 (250 lum sq/ft)Low Mode:*initial lux 680~720 (65 lum sq/ft)Multiply these results buy 1.5 to get a more accurate lum sq/ft number.Focused to a point at 1 foot, well over... » Read More Lumen measurements for any flashlight/light source are meaningless unless you have the raw data.This flash light with the "zoom" at max spread, from a distance of one foot, with a coverage area of 1.5 feet, using quality 3.7V 18650 Li-Ion bats:High Mode:*Initial lux 4800~4900 (450 lum sq/ft)Med Mode:*Initial lux 2600~2750 (250 lum sq/ft)Low Mode:*initial lux 680~720 (65 lum sq/ft)Multiply these results buy 1.5 to get a more accurate lum sq/ft number.Focused to a point at 1 foot, well over 90,000 lux (bright as the sun), but that's what makes it great. You get that visible light WAY out long away if you need it. « Show Less
1517657
I've always used them with two cell flashlights. If the six batteries are in series (- of one battery against the + of the next battery and so on), then you'll increase the voltage but the overall power capacity remains the same. For example, two 1.5 volt batteries in series gives you three volts, but overall should have the same overall power capacity as one 1.5 volt battery. Six would be 6 x 1.5 = 9 volts. Now Having said that, I have recycled nearly dead batteries into flashlights with these LEDs and still get very useful amounts of light for several more months (where the conventional flashlight bulb would have become too dim to use). Hope that helps, Joe
334391
I just bought 2 of each, the UK SL4 eLED and the XM-L2 LED as these dive lights are in my price range. There is a SIGNIFICANT difference in the brightness of the lights. The UK SL4 eLED is about 5 times the brightness of the XM-L2 LED. I put the same batteries in all four purchased just to make sure one wasn't a dudd or the batteries were dead. I did not take either one out diving, so I can't say how it handles at depth. Got to love Amazon Prime as the XM-L2s went back to UPS today.
1883295
The ST1 is 220 lumens and the ST1-EX is 300 lumens. I bought the ST1-EX (300 lumens) and am very pleased with it and would do it again w/o hestiation. If you're going to upgrade your flashlight, go with the ST1-EX - you won't be dissapionted.
107825
You can get a lot more flashlight for the money from other vendors.I don't believe their stated output on Zebralight.
1596771
There is a performance gain by using the 18650 battery. I tried both battery options and found the 18650 to work the best. I have a couple other flashlights that uses the 18650's. I purchased a 12pk of the 6000mAh batteries and that is my recommendation. That last for ever. I hope this helps.
1648563
There are a lot of identical looking flashlights out there but they are NOT the same. Read the specifications carefully. They don't all take the same batteries nor do they all have the same CREE LED. This flashlight, if you get the same one I did, is exceptionally bright. Word has it that sellers are often substituting inferior but identical looking items. The one I got from this seller is absolutely tremendous. This is WAY more than 50 lumens. The light is blinding.
2203236
Please check your batteries, the batteries might be low. If you use high power on these types of flashlight they use up a lot of battery power.I use for my flashlight UltraFire18650 3000 MAH from Battery Junction website. 3000 MAH is the reserve battery power. It is like the gas tank of your car. The lower the number, the less reserve battery power. Be careful by these batteries from E-Bay there are a lot of FAKES, I buy my batteries from BatteryJunction Website. I hope this helps good luck
227899
If this flashlight is with real high end Cree XML T6 , the highest Lumen should be about 1000 if with a full charged standard 18650 battery, while the lumen is changing quickly with the consupmtion of the battery power,moreover, it is not possible to judge the lumen number with nake eyes, no one can tell it is 500 or , 700 or 1000 , given there is also different light color with XML T6 LEDs.
1359003
I don't have a lumens measurer... but it's bright. I would give it 1000 for sure! if you can tell the difference you play with flashlights way too much.
268098
The lumen rating for the flashlight is not specified anywhere in the research I did before purchasing, however very similar flashlights in size, construction, appearance and requiring 3 AAA batteries with the 9 LED bulb configuration are rated at 30 lumens maximum when batteries are at full strength. All I can say for sure is that they are very bright, sturdy and last a long time. I have had mine since January 2014 and have at least one in every room in my apartment and use them practically every day and they are still going strong on original batteries. They are also nice to have around for emergency purposes, to carry in a backpack/purse, etc. I gave a couple away as gifts and both people love them. Hope this helps.
293008
This model is 500 lumens. I doubt you would be able to tell the difference between the two different powers.
356349
check the voltage for the batteries that are typically used for your flashlight. These batteries are the same size as 123 camera batteries which are 3 volts. These batteries are 3.6. This may be causing your problem.
1915641
I must confess that I do not possess a meter to measure lumens. I can, however, assure you that any flashlight being operated by a 3.7 V battery will have a startling effect when suddenly switched on. I am more than satisfied with the capability of my unit. If you purchase one and find yourself dissatisfied with the intensity of the light, you can always return it. I hope my comment will assist you in your decision. Have a nice day, Steve
1219508
I don't know the lumens. Mine has HWA/WYS Ultrafire engraved on it, shipped from the US, it was advertised as 1600 lumens, but I highly doubted. My only suggestion is to go with the brand names and if possible, ones that shipped from the US.