Cygolite Expilion 350-Lumen USB Rechargeable Headlight

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Price: $76.05 

Product Feature
- Bike light with innovative Cree XPG LED technology for 350 lumens of illuminating power
- Quick-release internal lithium ion battery stick lets you swap out batteries on the fly
- Wall charger compatible with 100V to 240V for use worldwide; also supports USB charging
- One LED bulb with 350 lumens; five-hour charge time; 130-gram weight; run time up to 24 hours
- Includes limited one-year manufacturer's warranty
Product Description
State-of-the-Art Cree XPG LED technology supercharges the ExpiliOn’s brightness while the quick release internal Li-Ion battery stick gives riders the complete package: brightness for the trails, compact size for commutes, and the ability to swap batteries on-the-fly for extended run times. This handlebar mounted system features 7 lighting modes, USB charging, battery low indicator, for optimum power and convenience on every ride.
Cygolite Expilion 350-Lumen USB Rechargeable Headlight Review
This is a great light -- my previous light was a Planet Bike Blaze 2 watt light and though that one was pretty good on city streets, I wanted something brighter for rainy nights so I can see the road (and potholes) more clearly.
This Cygolite is definitely what I was looking for. On most (non-rainy) nights, I use the Low setting since that still allows me to see the road clearly -- the Planet Bike Blaze on its "high" setting is just a bit brighter than the Cygolite on low. But once I switch to medium or high, the Cygolite is *much* brighter than the Blaze.
The beam pattern is good, it illuminates the road well with enough spillover to let me see reflective streetsigns several blocks away.
I haven't run the batteries down yet, I've only used it for about a week (around 4 or 5 hours of use). Since it's rated for 6 hours at medium, I'll probably just recharge it every week and won't have to worry about it ever running out of power.
When I read that it had 7 modes, I was worried that I'd have to cycle through all 7 modes just to change brightness. It turns out that only 5 of those modes are normally available, so it's only necessary to switch among those 5. The other two are special modes that you get to by holding down the power button longer when turning on the light.
The modes are:
1. High - very bright, much brighter than I need in normal use, but maybe useful in the rain (3 hours rated battery life)
2. Medium - gives great visibility, good battery life (6 hours rated life)
3. Low - gives decent visibility of the road, great visibility to cars (13.5 hours rated life)
4. Boost - extremely bright, noticably brighter than "high". I don't think I'll ever need this setting (2 hours rated battery life)
5. Daylight flash - bright flash for daylight use only (24 hours rated life).
The two special modes are:
1. walk mode - just bright enough to see where you're going when walking, very long battery lifetime (24 hours)
2. SOS mode - flashes out "SOS". I can't imagine ever using this mode, but maybe a mountain biker lost or injured in the woods might use it?
The manual says you need to use their USB charger cord for charging the unit or damage could occur. I don't see any obvious difference between their cable and a standard USB cable or any sign that there are any additional electronics in their cable, so I'm not sure if that's true.
Overall this is an excellent light. I haven't had it out in the rain yet, but I think it will perform well.
*UPDATE*
After a few rainy rides at night, I'm still quite happy with the light. When I put it on "high", it gives great road illumination, whereas with my old light, the wet pavement just sucked up the light without enough illumination to show pot holes and other road defects.
Riding side-by-side with my riding partner and her Blaze 2W, my Cygolight has a "footprint" that's about 3 times wider and longer than her blaze and even when the Cygolight is on low, it's brighter than the Blaze.
I haven't run the batteries down yet, I'm getting at least 10 hours of runtime on "low", but recharge the batteries regularly to prevent them from running out while I'm on a ride.
The daylight flash mode is *very* bright. When riding in morning fog in daylight, I can clearly see the light reflecting back from the little fog droplets while flashing, and can even see it flashing on my riding partner's jacket 5 feet in front of me, kind of like a mini camera flash.
I contacted Cygolite about using other USB chargers and they agreed that there was nothing special about their charger, but since they haven't tested it with any other USB chargers, they can't guarantee that it is compatible with any other charger. So to prevent battery damage, they recommend only using the genuine Cygolite charger and cable.
Despite my comparisons with the Planet Bike Blaze, I'm not saying that the Blaze is a bad light. For a two AA battery light, it's pretty good, but the Cygolite is only about 50% more expensive and is a much better and brighter light.
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