The Knog Blinder Mob V Kid Grid Rear Light is a great little unit that emits more than enough light and also has some good design features.
As the name might suggest, the Blinder is great for pumping out light – 44 lumens to be precise, which is more than enough for riding at night. It has five different sequences: two solid settings (one brighter than the other), one flashing, one with a jazzy concentric LED flash that speeds up and then turns solid, and one with concentric LEDs. It might sound banal, but having a bit of variation is good, and I was impressed with the options available.
The light sits well on most seatposts thanks to the three different straps included in the package. I used it on a mountain bike, a track bike and a road bike with no issue (I didn't use it on an aero post, though apparently it'll fit on one of those too). It stays in place well and firmly thanks to decent quality rubber and a thick metal buckle to keep it secure.
Operating the light is through one button behind the top of the unit. Holding it down turns it on or off, and a quick press changes the setting. It is simple to use and I found it easy to access the button even when reaching behind the saddle while on the bike. It's also highly waterproof – there was no issue whatsoever when using it in soaking conditions.
Claimed battery life ranges from 2.5 hours on steady high to 60 hours for eco flash. I left the light on in the steady low setting (5.8hrs claimed run time) at the start of the working day and it ran solidly until about 4pm; I didn't leave it on for 3.5 days, but used it on the eco flash mode throughout the review without needing to charge it, so I can believe the claim.
Charging is done through the built-in USB connector, which sits behind the buckle on the strap. It is simple to plug into the wall or laptop, although given the exposed nature of the USB it's worth wiping it off first. Charging takes 3-4 hours, so just sticking it in the laptop at the start of the day means it is fully charged by lunch.
At 42g (claimed 41g) it is unlikely to weigh you down, and its RRP of £34.99 strikes me as about right for a good quality USB light.
Overall, I was really impressed with this light. It is very well made with strong straps, a decent buckle and well-thought-out sequencing. The light pumped out is impressive and I'd say the battery life is as much as anyone is likely to need.
A well-made, bright and well-designed light
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road.cc test report
Make and model: Knog Blinder Mob V Kid Grid Rear Light
Size tested: Dimensions: 26x76x62mm, Rear
Tell us what the light is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?
A commuting light that's easy to use and bright enough to be seen.
Knog says: 'An attention seeking, limelight snatching party animal, perfect for those darkened inner city streets and urban commutes.'
It does everything it needs to in a compact and well designed package.
Tell us some more about the technical aspects of the light?
LIGHT OUTPUT : REAR 44 lumens
DIMENSIONS : 26 x 76x 62mm
WEIGHT : 39g
RUN TIMES : Steady high 2.5 hrs, Steady low 5.8 hrs, Strobe 7.2 hrs, Fancy flash 12.3 hrs, Eco flash 62 hrs.
Well made, good straps, waterproof and bright.
Well designed and thought out, simple to turn on/off and easy to operate even just by touch.
Multiple straps make it easy to transfer between bikes with different seatposts. The buckle and thick rubber also keeps everything in place well.
No issues at all.
In the low settings it gave 6 hours on solid and 60 hours on flashing, great for everything I needed. Relatively quick charge too.
Bright and easy to use.
Well made, waterproof and sturdy.
Some are more expensive, others are cheaper, but this sits at about the right place.
Tell us how the light performed overall when used for its designed purpose
Very well, it kept me highly visible, didn't run out of juice at inopportune moments and stayed on the seatpost well.
Tell us what you particularly liked about the light
The sturdiness was a real highlight, everything feels well made.
Tell us what you particularly disliked about the light
Perhaps that you need to wipe off the USB before charging.
Did you enjoy using the light? Yes
Would you consider buying the light? Yes
Would you recommend the light to a friend? Yes
Use this box to explain your score
A well made, bright light that did everything I needed it to. It has a good range of sequences and good battery life.
About the tester
I usually ride: Cannondale Supersix Evo 6 My best bike is:
I've been riding for: 5-10 years I ride: Every day I would class myself as: Experienced
I regularly do the following types of riding: commuting, club rides, sportives, general fitness riding, fixed/singlespeed, mountain biking
George spends his days flitting between writing about data, running business magazines and writing about sports technology. The latter gave him the impetus (excuse) to get even further into the cycling world before taking the dive and starting his own cycling sites and writing for Road.cc.
When he is not writing about cycling, he is either out on his bike cursing not living in the countryside or boring anybody who will listen about the latest pro peloton/cycling tech/cycling infrastructure projects.