MTB Lights for Night Riding - $300 vs $18

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1. Lumina 700 lumens put 2 of those in each side of the fork and done.
2. According to Cree's website, the LED's in the amazon light each have a max output of 1,040 lumens at 10w. 2 LED's mean a max of 2,080 lumens at 10w.
   
   So the theoretical max would be 2,080 lumens. That's far from 5,000 and obviously less in than 2,080 lumens. That's just false advertising.
3. BT40s / BT21 combo. Easy. Use the leftover $200 to put a down payment on a Kuat.
4. I have a similar light it's waterproof and battery has lasted for several weeks at a time
5. I bought a amazon light similar to the one you have and tested it on a light meter and it is at full power only 455 lumens. As for the battery pack I sealed it in a vacuum bag and heat shrinked the cable and bag together. I haven't had any issues so far. I live in northern alaska and ride my fatbike in snowy and bitterly cold conditions. In -50f the light only lasted 30 minutes so its not the best for a long night rides.
6. If I remember correct, when using a lumen meter, if you hold it right against your light source, you can get some crazy high lumen ratings on any light. An accurate measurment would be "lumens @ x feet" to really tell you what it does.
7. They probably did a typo and ment 500 lumens
8. Seth I would love to watch for you to compare action cameras too
9. The big issue is the enormous variation in production quality of eBay or Amazon lights. Putting all of this type of light (Ones named solarstorm or ones that look the same; the "eBay specials" :P ) into a "it will explode category" is wrong. Some of them will be very safe, while others will be a ticking time bomb. Even price doesn't give a hint, sure, cheaper lights may be more likely to go thermonuclear. But you could buy a £50 or more expensive "eBay special" light and it could go boom. What you really want to do is find a reputable manufacturer (If you're in the UK I recommend visiting 7dayshop and looking at their Cree bike light, they're reputable and it's 20 quid) because then you can be certain on quality. But with these cheapie no name brands there's a huge variation in them and some could be dangerous.
10. i have a 9000 lumen MTB light xd
11. "as for the SIGMA - it's particularly german" :D
12. all other things being equal, color temperature is the usual issue for me. cheap LED lights generally have light output that's too colored up to be as useful. output will be too blue/purply or even greenish. If you want a better light, find a nice $100-200 flashlight and highend rail mount for it. That way it's 1 sealed unit and there's no wire and battery pack to think about. There are quite a few compact flashlights that run on 4 AA's with legitimate 1000 lumen output.
13. Yeah it's impressive when you bring out a 1,000+ lummen light, most people have never seen a flashlight with more than a 100 or so. I have a Nitecore TM26, which puts out a legitimate ANSI tested 4,000 lummens, it's awesome. And my daily carry is a Zebralight SC62w which is the size of a fat lip balm but puts out 1,000 lummens
14. $300 is too much for a stupid light. Seriously, all you have to do is buy a flashlight holder that you can get on ebay for $2 and then buy a cree flashlight from walmart or target with 200-800 lumens which costs from $20-40 or you can get it off ebay for even cheaper. Totally not worth it to spend more than $50. Also, you don't have to deal with wires either.
15. You are bull crap
16. One long thing is being reliably ride after ride , I use a light and motion seca 2000 ,exposure torro and a stellar 500 helmet light when riding in the back of beyond pitch black on your own you need the very best you can afford, at by steve
17. I bought a cheap Chinese rechargeable taillight of which its mimicker costs more than $100 I payed $12 for it and I can say after well over a year its worked flawlessly. I wouldn't take the same risk with these headlights though. I need some headlights though.
18. You can now get a waterproof battery case for about $14. You'd have to blank off the USB if you were going to dunk it. There's also a better cheap light for about $10. It's rated at 3000 lumens too, but it's brighter than the one shown in the video. They each have the waterproof screw connector. I haven't tested, but I can't see any reason why that combo shouldn't be as waterproof as the Sigma one, and I doubt that there would be much difference in brightness. Anybody going to test them?
    
    https://www.amazon.com/Tigervivi-Silicone-Waterproof-Rechargeable-Headlamp/dp/B00ULOPICK/ref=sr_1_66?ie=UTF8&qid=1482782943&sr=8-66&keywords=bicycle+headlight+cree
    
    http://www.ebay.com/itm/3000LM-CREE-XM-L2-LED-Cycling-Front-Head-Bike-Lamp-Bicycle-Torch-HeadLamp-6-Mode-/131718283204?hash=item1eab057fc4:g:gM4AAOSwJb9WsV1V
19. hang on,, ive got an amazon light as you call it,, it was NEVER claimed to be waterproof,, just splash proof, it even says on the advert for it DONT SUBMERGE IT! so this friend, is bullshit!
20. would be very easy to either silicone amazon battery pack of use plastic container...most people don't ride in rain anyway...