I use this light 5 nights a week pedaling home ...
923633
I use this light 5 nights a week pedaling home from work and very bright and very dependable,  will buy another if anything happens to mine
1655525
Great little light!! Have had for a few weeks now and place on my commuter bike. Have yet to need a recharge and the light is super bright with multiple modes.
392418
I got this for home use when my other headlight went to our weekend getaway.  It works well and seems to have a long battery life.  The "digital focus" simply adjusts brightness levels between the straight-ahead LED and two wide-beam LEDs - not a feature I will use often.  The ratcheting action to tilt the light up and down makes a loud noise and takes a lot of effort - I am afraid it will wear out or break with frequent use.
2328546
I work a night shift as a switchman/conductor at a local railyard and this light meets all my needs and expectations.  I can see auto-racks from ten cars away, and reflective surfaces from even further.  However, I give this product three stars due to it recently quitting on me.  The red back light still works, however the main one does not.  Possibly due to extreme weather conditions (Indiana rain, sleet, snow and single digit temperatures) and running for long periods of time each night.  A definite bargain for Prime members.
1993150
This light is super bright and the charge so far has held well, I've only had to charge it once in the past 3 months with casual use. It has the look and feel of a solid high end piece of equipment and seems very durable. I really like the feature of it warning you with a red switch vs. blue when the battery is getting low unlike some bike lights that simple die at the worst time. When the light turns red I've still ridden my bike another hour + and it kept my path illuminated though it does switch to a low light setting to conserve power there is still plenty of light to safely get back home. I highly recommend this bad boy for any biker who may find themselves out after dark, or if you're looking for a super bright flasher for day time road riding as well.
310422
Have used this for several night rides so far.  Throws plenty of light for my rides, which are usually 2.5 hours or less.  If riding trails at night, I'd pair it with a helmet light as you loose the trail momentarily in turns if it's mounted on the handlebars. I plan to pair it with a Lumina 550 mounted on my bike helmet.  I like that it has rechargeable batteries.  One caveat: if you don't have a power converter, you will need one if charging via a wall outlet.  Fortunately, I have several Apple power converters which work just fine.
2724272
Excellent product,  use it about 4 times a week,  5 miles at a time
1225221
I already have a LOT of front/rear lighting (by DiNotte) on my bike & helmet, but felt like this would be even more useful for right/left lighting.  I ride home from work on a bike lane on a relatively quiet road, but it's at midnight, lots of blind curves, fog, rain, and entry/exit points for cars.  Also, I'm just plain krazy for bike lights.

PROS:

- Lots of "thumbs up" and appreciative vocalizations from drivers/pedestrians/other bikes.  It's a pretty cool light show with just one unit on each wheel.

- Battery life is pretty good.  I'm recharging my Eneloop NiMH batteries (not included) about every 3 weeks.  I use the MonkeyLectric 30 min at a time, 2-4 x week.  Obviously, I'm not using this unit on the daylight portion of my commute (see "CONS")

- Very durable so far, lots of rain, a little snow/ice, plenty of mud/road grit.  No problems in 8 months.

CONS:

- No help at all during the daytime, but it's not designed for that.  Other lights (DiNotte) will help you be seen by motorists in daylight/overcast conditions, but not MonkeyLectric.  And they tell you that up front, it's not a surprise.  It's purely a night time light.

- I have a very heavy steel bike, carry a ton of work gear/lock, and I'm a fat American.  Even with all that "damping", at very high (downhill) road speeds, I can feel a slight front/rear oscillation.  It's not dangerous or destabilizing, just noticeable.  I speculate that if I were a thin guy on a "crabon fibre" bike, it still wouldn't be destabilizing, just more noticeable.  But that's ridiculous, right?  What self-respecting, gram-conscious roadie would even consider putting this on his/her aero-spoked bike?

- It's a chunk of electronic equipment flying around & around through water, mud, potholes, etc.  It's been working great for 8 months, however, it probably won't last forever.  I'm sure it's made as durable as it can be, but the environment & conditions it goes through will eventually take a toll.

So, once you have a fantastic tail light (most critical in traffic), and an excellent front light (pretty darn important), then it's time to buy a couple of MonkeyLectrics!
1952337
I got it last December, and last night I couldn't find the battery charger and the battery is dead. Zoot! Alors! And other French(ish) Pepe LaPew exclamations. Other than not having an unloseable charger, the only problem with this light is a lack of warning when the battery is getting low.

Bright? I run it on medium most of the time. I have the $5 optional diffuser so I get a nice, useful light pattern. If I rode my recumbent trike at 10 mph instead of 5 or 6, I might use the bright setting. But I'm retired and I'm hardly ever in a hurry.

I have owned a few brighter bike lights, but all they really did for me was use up the battery faster.

I use a smaller, less bright light on "strobe" to make me more visible from the front. It's also a good backup headlight when the main one craps out. Next, I suppose I'll get another one of these 1200 lumen jobs and use +it+ as my strobe & backup.

Oh - for the people who have trouble with the mount slipping: get friction tape (not shiny electrical tape), and wrap it around the handlebar where the light will go. Then make gravity your friend by mounting the light +under+ the handlebar.

I like riding at night, especially during Florida summers, so my trike is lit up like crazy - front, rear, and sides. :)
2651435
I've used this bike only a bit, but more so my brother-in law has been using it to commute on his bike.  He's very abusive with many times and leaves things outside in the rain, drops the bike in the back yard...he cares even less because it's not his.  With that said, with the miles he's put on and the unnecessary abuse he's applied.  The light and the mount are still functioning so that's a big + on my end.

From a lighting perspective, it's pretty darn bright for one watt, and the life of it is very good.  I agree with other reviews that you'll want to use two for dark trails or streets.  Just mount two on the handlebar and call it a day.  I would think two of these is better than one light costing you 100 bucks.
1588311
On my first night mountain bike ride my old dim light failed and I had to have others help me get down the mountain. I vowed that next week I would have more lumens! I bought a tolite combination, this light for my handlebars and the Night Rider Lumina 700 for my helmet. I really like the combination of spotlight and wide-angle lights on this unit. it really lights up the trail!. I would give it 5 stars but the mount for the light is a thick rubber band and it doesn't hold the light in place on heavy bouncing trails. if all you are doing is writing on the street this would be perfect.
330459
Yes I just neededcenough light to ride my bike home at night. It's as bright as a vehicle light.
19456
An excellent light for working on automotive or home remodeling projects. The light is bright and consistent. It is not too bright to cause glare. The rotating and tilting head makes positioning the lamp easy. Multiple mounting options allow you to attach the light to metal surfaces with the integrated magnets, hang it from the integral hook or attach it to a mini tripod using the tripod mounting nut on the  bottom of the light. A belt clip is also included.

After following the manufacturers directions by charging and fully discharging the batteries, the light lasts over 5 hours on the highest brightest setting. This is sufficient battery life for my use.

I give it four stars due to the need to charge and discharge batteries before attaining maximum battery life. I have never owned a battery powered light that required this time consuming process. The manufacturer should provide batteries that do not require this extra effort.

Update:  April 4, 2016 - After 15 months of use
This is now my favorite work light. After 15 months of use it has proven to be a durable and well designed light. I use it about once a week to work on my car or home projects. I have dropped it from about 3 feet onto  a concrete floor a few times and it is working fine with nothing broken. Strong magnets hold it to my car fender and frame when I work on the car. Yesterday, I used it for a home drywall project. Placed it on the floor and let the even light coverage flood the surface of the new drywall I was mudding, It showed the hills and valleys in my drywall.

Battery life could be better. I am getting about 3 hours of light on the high setting. I wish the batteries were better.
3100245
If you want a strong light with a decent battery light at an affordable price. Stop right here and buy this.
This is an amazing light for the price. I have compared this light to the lights other riders paid a lot more and I still firmly convinced that this is the light.

UPDATE 09/2013 - Having gone on a 550 miles trip with this light, I can strongly recommend it. It is a great light for riding at night. I was more than impressed with it's performance. Battery life was more than adequate for me to ride over 6 hours in flashing mode during heavy rains, and a couple of hours on the highest light setting.
Just for peace of mind, I would recommend the purchase of a spare battery.
1426495
So far, it's been six weeks since I installed this light and I have to admit that it has exceeded my expectations.
2491701
i have mighty lights all over this home it save me the time to turn on the light i need to see where i am going then turn them all off. august
1058385
Very bright light, though the handlebar clamp seems to come loose.  I've used this for one week of commutes so far and am very pleased with the flashlight - high output and the focus ring is great.  The clamp used to attach to the handlebars seems to come slightly loose.  This isn't a big issue as you can then quickly re-adjust by hand, and it's not loose enough that it moves drastically in a 30 minute bike ride.

Overall, this is a great bike headlight at a great price and I would recommend it.