Any light worth buying nowadays is rechargeable via USB (we only recommend rechargeable lights in this guide other than our dynamo option) so run time is less important for most cyclists nowadays; but of course, if you plan on doing multi-day adventures without access to electricity very often, you'll want lights with decent battery life unless you go down the dynamo route. With its genuine 270-degree visibility, compatibility with aero seatposts, powerful output (especially impressive is the retina-searing day flash), extendable run-times, aerodynamic shape and low weight there aren't many lights that can shade the Moon Cerberus at this price point. I predict it will be particularly popular with time triallists now that rear lights in CTT time trials are compulsory as of 1st January 2020. It misses a perfect 10 because of the rubber bung that can be easily lost and the USB-C cable it uses. Verdict The USB-C has reliably charged inside 2 hours. There's a tiny LEDon the side of the light that will glow a steady purple when the battery level is low. Moon Cerberus rear light: value and conclusion

If the option for Financing or one or more of the monthly terms are not shown, then unfortunately you are not eligible to apply for that finance type at this time. Pay in 3 instalments If you're returning to cycling after a very long hiatus, you'll be pleased to know that bike lights have come a long way this century! The rechargeable, LED light is now king, and unlike the notorious Ever Ready lights that were popular in the '70s and '80s, you don't need to spend a fortune on batteries to get your feeble beam to work for a couple of hours. The second buttonis primarily used to vary the lumens. A long press activates the VLS mode and ramps the output from minimum to maximum, just release it at the required setting. Though most modern bike lights are very versatile, there are a couple of things to think about when purchasing a set of bike lights to make sure they're suitable and compatible with your bike.Run times have been consistent and you can really squeeze hours out of it with the VLS; 18 hours in steady mode at the lowest setting, 100+ hours on day flash in the lowest setting. Even without adjusting the output you can get an impressive 19 hours on day flash (150 lumens). The 50 lumen steady mode gives a more modest1 hour 45 with the VLS coming in useful hereif you are planning a longer ride on a winter night.

The Cerberus has a two button interface with both buttons on the top left side of the taillight. The power button is on the top while the one below it is primarily used for the VLS feature. Aside from debossed icons on the buttons, there isn’t any tactile or material difference to them. Because of this, we found the buttons difficult to use with gloves as they are hard to differentiate from the taillight housing. Between the buttons is also an indicator LED that is used to show when charging is active as well as indicate low battery. As with other rechargeable taillights, the battery indicator is subtle and easy to overlook. There is an “auto safe” mode that extends the runtime when the battery is low, but you’ll still need to remember to charge the light regularly to avoid running out of battery while riding. FEATURES Pros: Best-in-class side visibility, fits any seatpost, aerodynamic shape, modes sensibly limited to five Consider what settings you will need. Most modern bike lights come with a number of steady, flashing and pulse modes, so go for some that have options if you're not sure what is best. A popular combination is a steady front light with a rear light on flash mode in urban environments; although, use your judgement to decide on how bright your rear light needs to be if you're running it on flash. Dazzling drivers and other cyclists doesn't really improve anyone's safety, so get a second opinion from friends or relatives if you're in doubt about how bright your beams are to others. When your bike arrives final assembly will be required. Don’t worry we’ve got you covered. Our step by step instructional video can be found here as well as our easy to follow instructions.Emma’s first encounters with a bike were in between swimming and running. Soon after competing for GB in the World Age Group Triathlon Championships in Edmonton in 2001 she saw the light and decided to focus on cycling. As with other Moon Sport devices the USB Type-C charging cable is bright yellow to match the brand logo. MOUNTING VARIABLE LUMEN SYSTEM: This is a feature Moon Sport has incorporated into most of their lights and allows you to adjust the output of each mode independently. Once activated, the light ramps up from minimum to maximum power for that mode (note it flashes at each extreme to indicate a max/min has been reached) slowly until you select the desired level. The chosen output value overrides the factory defaults allowing for full customization. Although it’s a cool feature to see, we imagine most users won’t utilize it as the factory defaults are more than sufficient. And unlike most lights, the Cerberus is not just designed for a round-profile seatpost. The clamp has a clever system whereby two hinged wings and a flexible rubber pad make it fit both round-section and the sharpest bladed seatposts. You choose from three supplied rubber bands in the box to get the right fit, but any rubber band will do, such as the ones that come with Garmin stem mounts.

Short Press: turns light on (light off) / switch between output options for current mode (light on). Ich würde mir ja wünschen, dass sich alle Hersteller von Lampen und Bikecomputern auf ein gemeinsames Handling ihrer Produkte einigen würden, wenn es beispielsweise um das Ein- und Ausschalten sowie Änderungen der Modi geht. Es liegen mehrere O-Ringe dabei, mit denen man das Licht am Rahmen befestigen kann. Ich habe sie gegen ein Gummi ausgetauscht, dass sich für mich etwas passender anfühlte, aber sicher taugen die beigelegten Gummis ebenfalls.

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In terms of visibility,the Cerberusis great. Road users to yourrear, left and right get a decent blast of light in all modes. From a great distance it's not as visible as some others, but it casts its beam far enough for you to feel safe. Do you need to abide by these rules? If you live in Germany then yes, of course! For the rest of us, we can use our own judgement to decide which beam shape and style is best for us. It is perhaps polite and common sense to use front and rear lights that don't dazzle other cyclists, motorists and pedestrians, and if you want to make sure of this then you can look for beams that are StVZO-compliant. The problem is that not many manufacturers outside of Germany make them, with Lezyne and Cateye being two rare examples of brands that sell StVZO-compliant lights in the UK. Some brands such as Ravemen and Moon use refractive lenses to shape the beam so less of it's going into the sky, and we've found Ravemen's version with refractive elements to spread and lower the beam to be especially effective. The Moon Cerberus rear light comes pre-set with five different light modes which you can easily switch between including two constant, two flashing, and a Day Flash mode which can keep you seen in direct sunlight. Also included is the VLS system which allows you to set any lumen you want - simply press and hold the VLS button. Rechargeable Side visibility is an afterthought for most light manufacturers, but the Moon Cerberus supplies genuine 270-degree coverage and is as bright from the left or right as it is from the rear. Instead of a curved lens or cutout that is supposed to spread the light from rear-facing LEDs sideways, the Cerberus has three separate LED strips with two of them dedicated to sideways light. For those heart-in-mouth moments when you're passing a junction that's full of dozy drivers ready to SMIDSY you, it's game changing. The Cerberus light does the business at the far end of the bike with one rear LED and two side COB LED strips powered by a rechargeable 500mAh Li-Po battery. Again the flush side button is awkward to find in gloves, but it toggles through two solid and three flashing modes with a “press until you’re happy with the brightness”‘Variable Lumen System’ setting too. With the 50Lm max in the solid modes, 100Lm in the standard flash modes and a brutally bright 150Lm max in the Daylight Flash mode, no one has an excuse for not seeing you.