Making sense of flashlight brightness…?
I got confused when trying to buy a flashlight today.
When the flashlight says 3 Watts, is that the same wattage output than a light bulb in my house? 3Watts seems very low to me, yet it was the highest wattage I could find.
How does a lumen compare to a watt?
How does a candlepower compare to watt?
Do volts have anything to do with brightness output? Some flashlights only say how many volts.
Some flashlights only say how many LED’s it has, is there any way of telling how bright it is?
How am I supposed to compare if every company uses a different method of measuring light? WHY are there all these different measurements for light now? What was wrong with sticking to watts?
Lumens or candlepower is the true light you get out of a bulb or other light source. Watts is the power consumed to produce that light. Incandescent bulbs are very inefficient in this respect. Krypton and other rare gas bulbs are somewhat more efficient. LED’s are the most efficient. With flashlights or any battery powered light the watts used are important because you have limited power in your batteries. So I disagree partially with Ynot. Watts are important but you really need to know the about of light you are getting from those watts.
GoingGear.com Olight SR90 2200 Lumen LED Flashlight Review
|
|
Tactical Flashlight – 150 Lumens High Intensity LED Techlight Lumen Master $6.99 |
|
|
400 lumens ZOOMABLE 7W CREE High Power LED Flashlight Torch Q5 LED G7 LED $4.63 |
|
|
High power Cree T6 LED Torch X5-T6 1000 XM-L 1000 lumens X5 502 led flashlight $10.57 |
|
|
250 Lumens 501B LED high flashlight CREE Q5 three modes $9.99 |
|
|
7000 Lumen 5 x T6 XM-L XML CREE LED Flashlight Torch Light, 5 Mode High Power $0.99 |
|
|
7000 Lumen 5 x T6 XM-L XML CREE LED Flashlight Torch Light, 5 Mode High Power $0.99 |
|
|
High power Cree T6 LED torch X3-T6 flashlight 1000 Lumen 5 switch Mode LED LAMP $5.50 |
|
|
SureFire G2X PRO Black High-Output LED Flashlight 200 Lumens NEW FREE SHIP $102.99 |
|
|
SureFire G2X PRO Green High-Output LED Flashlight 200 Lumens NEW FREE SHIP $102.99 |
|
|
SureFire 6PX PRO Black High-Output LED Flashlight 200 Lumens NEW FREE SHIPPING $102.99 |
|
|
Surefire G3 LED Nitrolon Flashlight G3L-BK High-Output 120 Lumen 9 Hour Runtime $84.99 |
|
|
Cree T6 LED High Power 5 switch Mode X3-T6 flashlight 1000 lumen LED Torch $0.01 |
|
|
SureFire G2X Fluorescent Yellow Tactical High-Output LED 200 Lumens Flashlight $84.00 |
|
|
New High Power 1200 Lumen LED Flashlight-5 Mode Selections-Including SOS $99.00 |
|
|
XM-L CREE T6 LED Flashlight C8 Torch X7-T6 High Power 1300 Lumens 5 Switch Mode $17.99 |
|
|
WF-502B Cree XM-L T6 1000 Lumens LED Flashlight High Power Lamp Torch UltraFire $8.88 |
|
|
UltraFire 501B Camo CREE XR-E Q5 170-Lumens High Power LED Flashlight $16.99 |
|
|
UltraFire 501B Camo CREE XP-G R5 320-Lumens 5-Modes High Power LED Flashlight $24.99 |
|
|
4000 Lumens 3x T6 CREE XML XM-L LED Flashlight Torch, 5 Mode, High Power LED $1.25 |
|
|
4000 Lumens 3x T6 CREE XML XM-L LED Flashlight Torch, 5 Mode, High Power LED $0.99 |
|
|
BLACK – X21_1000 LUMENS HIGH PERFORMANCE FLASHLIGHT_LED LENSER #880008-8421 $183.50 |
|
|
Surefire LED G2-L-BK Black High output military flashlight 120 LUMEN NITROLON $74.00 |
|
|
NEW Princeton Tec 3 Amp LED flashlight-40 Lumen High Low Backpacking Hiking $12.99 |
|
|
Beamtech Cree XML-T6 High Lumen LED Flashlight Torch $35.00 |
|
|
FENIX TK40 HIGH INTENSITY FLASHLIGHT MC-E LED 630 LUMENS $49.99 |
|
|
A1 LED high flashlight CREE Q5 250 lumens five modes $12.99 |
|
|
CREE XML T6 High Power LED Light Torch X5-T6 1000 Lumen 5 Switch Mode Flashlight $5.50 |
|
|
3 pack TechLite High Intensity Cree LED Tactical Flashlight 200 Lumens New $35.97 |
|
|
Dorcy New Lumen High Flux LED Cyber Light Flashlight with Batteries $32.89 |
|
|
NEW Cree XPG LED TechLite 200Lumen Master Flashlight Torch High Intensity Strobe $9.99 |
|
|
Surefire G2X Tactical High-Output LED Flashlight 2011 Model (200 Lumens) G2X-A-F $119.70 |
|
|
TechLite Lumen Master 150 Lumen Tactical High – Intensity CREE LED Flashlight $9.98 |
|
|
200 TechLite Lumen Master 200 Lumens Tactical High-Intensity CREE LED Flashlight $11.95 |
|
|
*3 Watt High Power White LED for Flashlight 160 lumen $4.50 |
|
|
Coast MT7 LED 220 Lumen High Performance Rubber Coated Flash Light, Black $79.99 |
|
|
TechLite Lumen Master 200 Lumen Tactical High Intensity CREE XPG LED Flashlight $13.55 |
|
|
Coast HP7 High Performance 207 Lumens LED Flashlight, Black – Clam Pack HP8407CP $69.99 |
|
|
LED Lenser X21 High Powered 1120 Lumens Max LED Flashlight, Black – 880008 $299.95 |
|
|
Coast HP7 High Performance 207 Lumens LED Flashlight, Black – Box Pack 19279 $69.95 |
|
|
TechLite Lumen Master 200 Lumen Tactical High Intensity Flashlight Cree XPG Led $9.99 |
|
|
Z2-S LED COMBATLIGHT_160 LUMENS HIGH-OUTPUT LED FLASHLIGHT_SUREFIRE #Z2-S-BK-WH $107.95 |
|
|
Coast MT7 LED 220 Lumen High Performance Rubber Coated Flash Light, Black $79.99 |
|
|
Coast HP7 High Performance 207 Lumens LED Flashlight, Black – Clam Pack HP8407CP $69.99 |
|
|
LED Lenser X21 High Powered 1120 Lumens Max LED Flashlight, Black – 880008 $299.95 |
|
|
*New* CREE XPE L.E.D High-IntensityTactical Flashlight 150 Lumens – 3 PACK NIB $29.95 |
|
|
Coast HP7 High Performance 207 Lumens LED Flashlight, Black – Box Pack 19279 $69.95 |
|
|
Dorcy 180 Lumen -4AA High Flux LED Cyber Light Flashlight 41-4750 $18.89 |
|
|
CREE T6 XM-L High Power LED Lamp Torch X3-T6 1000 Lumen 5 Switch Mode Flashlight $13.99 |
|
|
SST-50 5Mode 1300 Lumen LED Flashlight High Power Torch $77.67 |
|
|
UltraFire C8 CREE XM-L T6 LED 1300 Lumen High Power Flashlight Torch Lamp $24.50 |
|
|
High Power CREE XM-L 3800-lumen 3*T6 LED Flashlight Torch Lamp+Battery+Ch $60.99 |
|
|
CREE XML T6 High Power LED Light Torch X5-T6 1000 Lumen 5 Switch Mode Flashlight $14.94 |
|
|
SureFire G2X PRO Black High-Output LED Flashlight 200 Lumens $31.00 |
|
|
3 PK High Intensity TechLite LED Flashlight 100 Lumen $39.99 |
|
|
Fenix TK40 High Performance Cree MC-E LED Flashlight (Max 630 Lumens) AA Torch $128.95 |
|
|
TechLite High-Intensity Tactical LED Flashlight 3 Pack 200 Lumens $19.99 |
|
|
High quality XTAR TZ20 PLATOON Cree T6 LED DIY Flashlight USB SET 800 Lumens $79.99 |
|
|
200 TechLite Lumen Master 200 Lumens Tactical High-Intensity CREE LED Flashlight $9.84 |
|
|
High Lumens LED Bicycle Cycling Flashlight HEADLIGT,3mode Bike Torch Head Light $6.95 |
|
|
M6 XML T6 860 lumens LED high flashlight 5 modes Torch $20.99 |
|
|
TechLite Lumen Master 150 Lumen Tactical High – Intensity CREE LED Flashlights $29.98 |
|
|
Surefire G2X Tactical High-Output LED Flashlight 2011 Model (200 Lumens) G2X-A-T $119.70 |
|
|
TechLite Lumen Master, 200 Lumen, Cree XPG LED High Intensity Flashlight $11.49 |
|
|
Aircraft Tactical LED Flashlight 200 Lumen High – Intensity CREE LED 164 yards $12.50 |
|
|
BLACK G2ZX COMBATLIGHT_200 LUMENS HIGH-OUTPUT LED FLASHLIGHT_SUREFIRE #G2ZX-A-BK $92.95 |
|
|
3800Lumens 3x T6 CREE XML XM-L LED Flashlight Torch, 5 Mode, High Power LED $49.00 |
|
|
Cree LED XM-L T6 High Power 1600Lumens Flashlight Zoom Adjustable $39.99 |
|
|
200 lumens Z1 LED high flashlight CREE Q35A 3 modes $19.99 |
|
|
High Power Mega Bright CREE MC-E LED 750 Lumen Flashlight, 7615 $90.72 |
|
|
BLACK – X21_1000 LUMENS HIGH PERFORMANCE FLASHLIGHT_LED LENSER #880008-8421 $349.95 |
|
|
CREE Techlite High-Intensity Tactical LED Flashlight 150 Lumen Master Black 4.5″ $6.29 |
|
|
High Intensity LED Flashlight 200 Lumens $14.99 |
|
|
TechLite Lumen Master 200 Lumen Tactical High – Intensity CREE LED Flashlight $12.50 |
|
|
High-Power CREE XM-L T6 LED 1400-Lumen Flashlight Torch A2+2*18650+Charger New $34.99 |
|
|
Z1 LED high flashlight CREE R5 370 lumens five modes $32.99 |
|
|
Nebo 5518 CSI Whiteout High Powered White 55 Lumen LED Flashlight $23.99 |
|
|
Dorcy High Beam LED Flashlight 45 Lumens 41-4286 $10.94 |
|
|
Pelican 2360 LED Flashlight, 110 Lumens High, 10 Lumens Low, Black #2360-000-110 $47.20 |
|
|
T9 high CREE LED XML-T6 lens zoom flashlight 860 Lumens $22.99 |
|
|
BLACK – P17 – 200 LUMENS HIGH PERFORMANCE FLASHLIGHT_LED LENSER #880050-8417 $87.95 |
|
|
TrustFire X6 CREE SST-90 5-Mode 2300 Lumens High Power LED Flashlight (3X18650) $159.88 |
|
|
Techlite Lumen Master High Intensity Tactical Flashlight CREE XPE LED NEW $14.99 |
|
|
High quality CREE XM-L T6 LED adjust Focus Flashlight Torch light 1800-LUMEN $24.69 |
|
|
New Alloy CREE XML T6 LED Flashlight 860 Lumens High Power Torch Waterproof $14.19 |
|
|
New Alloy CREE XML T6 LED Flashlight High Power 950 Lumens Torch Waterproof $15.49 |
|
|
New Alloy CREE XML Q5 LED Flashlight 240 Lumens High Power Torch Waterproof $12.89 |
|
|
New Alloy CREE XM-L T6 LED Flashlight High Power 900 Lumens Torch Waterproof $23.49 |
|
|
Waterproof CREE XML T6 LED Flashlight 860 Lumens High Power Torch Alloy New $14.19 |
|
|
Waterproof CREE XM-L T6 LED Flashlight High Power 900 Lumens Torch Alloy New $23.49 |
|
|
Waterproof CREE XML T6 LED Flashlight High Power 950 Lumens Torch Alloy New $15.49 |
|
|
Waterproof CREE XML Q5 LED Flashlight 240 Lumens High Power Torch Alloy New $12.89 |
|
|
New Waterproof 860 Lumens High Power Torch Alloy CREE XML T6 LED Flashlight $14.19 |
|
|
New Waterproof High Power 950 Lumens Torch Alloy CREE XML T6 LED Flashlight $15.49 |
|
|
New Waterproof 240 Lumens High Power Torch Alloy CREE XML Q5 LED Flashlight $12.89 |
|
|
New Waterproof High Power 900 Lumens Torch Alloy CREE XM-L T6 LED Flashlight $23.49 |
|
|
Waterproof 860 Lumens High Power Torch CREE XML T6 LED Flashlight Alloy New $14.19 |
|
|
Waterproof High Power 950 Lumens Torch CREE XML T6 LED Flashlight Alloy New $15.49 |
|
|
Waterproof 240 Lumens High Power Torch CREE XML Q5 LED Flashlight Alloy New $12.89 |
|
|
Waterproof High Power 900 Lumens Torch CREE XM-L T6 LED Flashlight Alloy New $23.49 |
|
|
New High Power 900 Lumens Torch CREE XM-L T6 LED Flashlight Waterproof Alloy $23.49 |
|
|
Rayovac SE3DLN Sportsman Xtreme 300-Lumen LED Lantern $24.15 With optimized beams, rubber grips, and tactical switches, Rayovac’s SE3DLN Sportsman Xtreme lantern is ideal for use inside and out, whether you’re heading for the hills or camping out in your home during a power outage. Nicely compact and ultra-portable at just 7 inches tall and under 3.5 inches wide, the Rayovac SE3DLN lantern also provides an incredibly bright 300-lumen light that makes it a … |
|
|
Streamlight 73001 Nano Light Miniature Keychain LED Flashlight, Black $3.75 FEATURES Easily attaches to just about anything with pocket clip or key ring: 1 Up to 8 hours run time: 2 Machined aircraft grade aluminum with anodized finish: 3 Uses 4 alkaline button cell batteries included: 4 White LED bulb with 10 lumens: 5 Weatherproof: 6 Includes a non-rotating snap hook for easy one handed operation when atta… |
|
|
Ultrafire Wf 502b Cree Xml T6 3 Mode Cree Led Flashlight 900 Lumens w/ Integrated Belt Clip $9.96 package includes? 1 X falshlight… |
|
|
Duracell Daylite 160-Lumens, 4-Watt LED Flashlight with 2-C Alkaline Batteries $20.00 Duracell Daylite flashlights and headlamps shine ultra-bright, white, even light wherever you need it. With innovative TrueBeam Optics⢠technology, Daylite flashlights shine up to 20x brighter than standard 5mm LED flashlights. Duracell’s professional-grade Daylite flashlights all come with a lifetime guarantee. … |
|
|
Duracell Daylite 80-Lumens, 3-Watt LED Flashlight with 2-AA Alkaline Batteries $19.98 Duracell Daylite flashlights and headlamps shine ultra-bright, white, even light wherever you need it. With innovative TrueBeam Optics⢠technology, Daylite flashlights shine up to 20x brighter than standard 5mm LED flashlights. Duracell’s professional-grade Daylite flashlights all come with a lifetime guarantee. … |
|
|
Westinghouse 03466 Nanolux 3-Watt G19 LED Bulb, White $19.95 … |
|
|
SureFire MN11 Replacement Ultra High Output Lamp Assembly for M3 Flashlights $20.00 The SureFire MN11 Ultra High Output Lamp Assembly is a specially engineered lamp that, when combined with its designated and carefully engineered reflector, will produce SureFire’s brilliant and perfectly-focused beam. The reflector is either integral to the head of your flashlight, or part of the prefocused lamp assembly. Ultra-high output lamps use more energy and therefore deplete batteries mor… |
|
|
Energizer Hi-Tech Keychain Light – Keychain Light – LED – Metal Body $16.54 Energizer Hi-Tech Keychain Light – Keychain Light – LED – Metal Body… |
|
|
DORCY 41-1080 500 LUMEN LED RECHARGEABLE SPOTLIGHT WITH CHARGING ADAPTORS $73.40 SPOTLIGHT CONTAINS 3 SUPER-BRIGHT HIGH FLUX CREE LEDS PROVIDING 500 LUMENS OF LIGHT BEAM DISTANCE UP TO 500 FT. NEW BATTERY SAVER TECHNOLOGY EXTENDS LIFE OF BATTERY ENSURING YEARS OF GREAT PERFORMANCEPROVIDES 2 HOURS OF CONTINUOUS USEPROPORTIONED TO ALLOW STANDING FOR HANDS-FREE USEDURABLE CONSTRUCTION DESIGNCONVENIENT TRIGGER LOCKING SWITCH INCLUDES AC & DC CHARGING ADAPTORSUPC : 035355410808Ship… |
|
|
UltraFire 18650 3000mAh 3.7V Rechargeable Li-Ion Battery (Pair) + Charger Combo $7.96 Indicator light lets you know when charging is complete. Designed to charge your batteries quickly and safely. Input Voltage: 110-240V, 47-63Hz Output: 4.2V 600mA Charges 1 or 2 batteries simultaneously Dimensions: 3.34 in x 1.85 in x 1.49 in Weight: 2.46 oz. Ultrafire Li-Ion Rechargeable 18650 with IC Protection. Capacity: 3000mAh. Voltage: 3.7V. Can be used in laser pointer,Torch Flashlights an… |
