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Too heavy, Short Battery Life, Bad Design.

    This headlight in total weighs over a pound. Don't go by the 4oz which is listed. The battery is terribly heavy. And the runtime appears as though it would suck big time. 15-50 hours? I wish I did not listen to the other reviewers, they are obviously using this for reasons other than hiking & camping. Brunton once again has disappointed me with terribly designed and overpriced gear.

    Great Headlamp/Thrower

      If you're knowledgeable about lights then you can relate to this great headlamp. First, it is incredibly light on the head with the external battery pack mountable where you see fit. Second, battery life is great even at full power, and a nice step down if you happen to be using full power for hours. Third my favorite, it is blindingly bright, uses a K2 Luxeon 5 watt LED (no headlamps to date uses a 5 watt LED except this one), slightly outdated LED technology, but because of thermal regulations and size this is the perfect choice. The light boasts over 100 lumens = very bright, and can be used as a thrower (term for a light that has tight-far projecting beam). Usually LED's are not capable of throwing like incandescents (halogen, xenon, etc...), not the case with a 5 watt LED. Typically, LED's are good for providing diffuse light with a very short range, but the Brunton L5 does both. It comes with a diffuser that easily slides over the light and you have great flood spread for working at night. Take off the diffuser and blow away your friends or anyone who has a flashlight, they will likely feel ripped off because your headlamp is much brighter. A fantastic headlamp 5 stars.

      Perfect for owl research internship

        I bought this when I landed an internship banding migratory Northern Saw-whet Owls in Pennsylvania this fall. I've used the L5 about four nights/week for the last three weeks.

        It's lived up to its hype as the "brightest headlamp in the free world" or whatever. All the other researchers and volunteers love it. Except most of them reconsider when they hear the price tag.

        Besides the lamp itself, I LOVE the rechargeable 6 V/4.5 AH NiMH battery. And I can go multiple nights without recharging, if I'm lazy.

        Great headlamp. (Now I own 3 very different headlamps.)

        Is this the headlamp I want for all-night...

        Is this the headlamp I want for all-night trail running? I plan to run 100-mile races, and money is too tight to go screwing around and buying a closet full of headlamps. . . Any recommendations?


        Check out this headlamp by Black Diamond:

        It's about a third of the price and gives you two different types of LED lighting for different conditions. It's lightweight, water resistant, has 200+ hours of burn time, and very comfortable. Karl Meltzer uses this headlamp, and he knows a little bit about running 100 milers at night :)

        how many lumens does the L5 put out?. What...

        how many lumens does the L5 put out?. What power are the other four settings? Can you get a second battery pack?

        Best Answer

        Hey greg, There are 4 settings Hi ~ 80-100 lumens.. Med ~ 45-60.. Low ~ 10-20, and strobe ~ 80. These are just estimates! I did not use any instrumentation or calculations these are simply personal estimates (I do own rated 220/30 lumen LED, 3,500 lumen HID, 60 lumen incandescent and many others!). The battery back lasts a very long time even at high setting. I have used it extensively and have not had an issue with step down voltage to conserve power. I am not sure what happend to Cowboy but other reviewers and gear junkies like myself did not experience these issues. The actual headlamp is 4 oz! Incredibly light no batteries on head or anything, the battery pack does come close to a pound, but you can put it on your belt or the belt that comes with the lamp. You wont need an additional battery pack! If you really wanted too (not be worth your time) you could modify this light and add a slightly more powerful LED and two battery packs, but not for the average joe. Now my only real critique is the housing of the battery pack it is not water-tight. So make sure you have it under your waterproof layer just in case, but the headlamp is water-resistant/easily survive rain and snow, not for scuba or diving! Hope that helps, honestly it is a pretty beast headlamp, if you find it on sale go for it you'll be stoked and your friends will be jealous.