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  1. #1
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    Xeccon Geinea I combination front and rear bicycle light (4x18650 pack)

    Xeccon Geinea I combination front and rear bicycle light (4x18650 pack)

    Xeccon have been working hard to improve on earlier cycle light designs and give the rider more features and performance. Xeccon does listen to the feedback from its customers and includes design updates based on this feedback.

    Previously I have taken a look at the Xeccon Spiker 1206, Spiker 1207, S14 and S12. From the S12 to the Spiker models, there has been a clear progression in sophistication in these lights, and the Geinea models are yet again moving forward.



    What is in the box:

    The Geinea I arrives in a nice solid two-tone box.



    The contents are neatly packed and organised in three sections.



    Grouping the power components together there is the charger, extension cable and battery pack in its neoprene mounting pouch.



    The additional mounting options components, a headband strap, headband mount/clip, cable tidy straps and o-rings.



    The light wiring loom comes fully connected with the front and rear lights, switch/driver and battery connections all marked.





    Taking a closer look

    The handlebar mount switch is bigger than the lights themselves and has two switches for front and rear. The design seems to incorporate heat-sink fins, and during the runtime test it became apparent that the driver circuit contained in the switch, does itself need cooling as the switch unit became very hot.



    The light heads are tiny, being roughly the same diameter as standard handlebars. A very low profile light.



    The light head really is incredibly compact.



    The white light has an XM-L LED and a textured (orange peel) reflector.



    The rear red light is the same size but has a very different looking lens.



    The honeycomb lens acts to diffuse the light from the red LED giving a wide range of visibility.





    Modes and User Interface:

    Each half of the power switch controls either the front or rear light.

    White - From Off, clicking the switch gives Max, Low, Strobe, Off etc
    Red – From Off, clicking the switch gives Max, Low, Slow strobe, Fast Strobe, Off etc

    The switches operate independently.

    Once either light is activated the switch lights up. If the battery has a good level of charge it shows green, then as the battery gets lower, this turns blue then finally red to indicate low battery.


    Batteries and output:

    As with all the other Xeccon bicycle lights I have tested, the Geinea I uses a custom battery pack. In this instance it is a 4x 18650 cell pack in 2S2P configuration so runs at 8.4V.

    To measure actual output, I built an integrating sphere. See here for more detail. The sensor registers visible light only (so Infra-Red and Ultra-Violet will not be measured).

    Please note, all quoted lumen figures are from a DIY integrating sphere, and according to ANSI standards. Although every effort is made to give as accurate a result as possible, they should be taken as an estimate only. The results can be used to compare outputs in this review and others I have published.

    Geinea I I.S. measured ANSI output Lumens PWM frequency (Hz) or Strobe frequency
    White Max 535 0
    White Low 179 161
    White Strobe 563 2.85
    Red Max 162 0
    Red Low 55 200
    Red Strobe Slow Not measured 2.7
    Red Strobe Fast Not measured 7.6


    This light utilises an electronic switch, so there is parasitic drain to consider. As the battery status light is no longer lit when the battery is connected, the drain is significantly lower than previous Xeccon lights, however during attempts to measure the drain, the initial power draw to power up the switch circuit has blown my ammeter so I cannot confirm a reading.

    The runtime graph shows the output traces for both the Geinea I and Geinea II. The Geinea I trace includes the output of both the white and red lights. Near the end of the run there are two drops in output which correspond to me moving the red light out of the integrating sphere to check the white light output level.





    The beam

    The red beam is very intense. Rear visibility is excellent.



    To better see the white beam here I have turned off the rear light. The beam is a nice spread of light and is bright enough for most use. Once your speed rises above 15-20mph on unlit trails it starts to become a bit stressful, but below this speed and in street lit areas there are no concerns.



    That rear light really is bright!





    What are they really like to use…

    The compact size of the Geinea I lights make them virtually disappear when mounted on the bike with the switch and battery being the most obvious components.

    Once you get used to which half of the switch controls which light (it would be nice if there were some indication on the switch), flicking between levels is easy.

    Shown here with the brighter Geinea II as the front light (with the Gienea I switched on for the rear only), it is clear though how bright the switch illumination is. With the lower powered Geinea I front light, the switch appears to be far too bright and distracting.



    That said I suppose it could be angled away slightly to reduce this effect, but it would be better if the illumination were far less bright.

    Rear visibility is excellent and the slow strobe seems to be best for attention grabbing. The front light strobe speed is excellent at under 3Hz and makes for a more recognizable 'cyclist here' type of lighting than other manically faster stobes.

    As an all-round kit the Geinea I front and rear light set is an excellent complete lighting kit. Its power limits the speed you can comfortably ride on unlit trails, but in general use is very good.


    Test sample provided by Xeccon for review as part of the Global Lighting Exposure.

  2. #2
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    Reposted in the correct forum.

    Reserved for updates...

  3. #3
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    As an additional note, not being so well known on mtbr, I would like to point out that I am a totally independent reviewer, testing products in my spare time (I work in IT for a living) and am not in any way affiliated with Xeccon, I just happen to have previously tested some of their lights amongst many many others.

    See here:

    Subwoofer's Flashlight reviews

    and here for a list of my other reviews

    Subwoofer's Reviews

  4. #4
    Kir
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    Excellent review!
    Some questions for you:
    1) Can you measure the wires length and add this info to the review? Especially for rear light with and without the extender.
    2) Could you remove the rear light bezel with lens to make picture of the led? It should be Cree XP-E or XP-E2 Red led.
    3) 3:10 runtime is on high level for both lights? Lights indicator in the switch did not flash red in the last few minutes? Chinese lights usually have it flashing to indicate that less than ~5% of battery capacity is remaining.
    4) And final question - how bright is 55lm for rear light, can you look at it in night from 2-3 meters without it hurting your eyes?
    I have a Smart Lunar R1 rear light and I always switch it to low mode if I'm riding in group with other cyclists as high will be very annoying for the guy behind me...but it seems that Xeccon doesn't really have very low mode.

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    Additional question about the rear light: how is the visibility in the daytime for both regular and flash mode?

  6. #6
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    Quote Originally Posted by Kir View Post
    Excellent review!
    Some questions for you:
    1) Can you measure the wires length and add this info to the review? Especially for rear light with and without the extender.
    2) Could you remove the rear light bezel with lens to make picture of the led? It should be Cree XP-E or XP-E2 Red led.
    3) 3:10 runtime is on high level for both lights? Lights indicator in the switch did not flash red in the last few minutes? Chinese lights usually have it flashing to indicate that less than ~5% of battery capacity is remaining.
    4) And final question - how bright is 55lm for rear light, can you look at it in night from 2-3 meters without it hurting your eyes?
    I have a Smart Lunar R1 rear light and I always switch it to low mode if I'm riding in group with other cyclists as high will be very annoying for the guy behind me...but it seems that Xeccon doesn't really have very low mode.
    Thanks :-)

    To reply to your questions:
    1. I'll see what I can do when I have some time (I review 100% in my spare time so need to 'find' time for any request.

    One comment I would make is that the front light would make an excellent head mounted light, but the trouble is all the cabling and wiring loom. I'm going to see if I can get a comfortable set-up using the extension to put the front light onto my helmet.

    2. Sorry, I don't disassemble any lights on request. If I do ever decide to have a look inside I'll let you know.

    3. When measuring the output and runtime traces, the lights are mounted in my integrating sphere.



    This sphere is set up with a logger to record the output over time and is left running (I can't sit babysitting the test rig). I generally find this once the light has switched itself off, so right now I don't know the full battery low indication flashes. Once I've had a few more night rides I should be able to confirm.



    4. Well that depends on if your eyes are dark adapted. If they are 3lm can be blinding.

    The full rear output is so bright (see the review photo) it really is too bright. On low it is a good brightness and not blinding. The slow strobe is my favourite, but the flashes are as bright as the maximum level. You only get away with it as it is flashing not steady.

    It doesn't have a really low mode, but on low and aimed down at the road, shouldn't be too bad for following riders. I tend to ride solo (being asthmatic and having a dodgy back and knees hips and ankles I prefer not to keep people waiting when I have to stop) so want a bright rear light.
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  7. #7
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    Quote Originally Posted by steelhmr View Post
    Additional question about the rear light: how is the visibility in the daytime for both regular and flash mode?
    Very good, the rear light is very bright on high, and the flashing mode uses high level flashes. About the best I've seen for rear light visibility.
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  8. #8
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    Quote Originally Posted by subwoofer View Post
    Very good, the rear light is very bright on high, and the flashing mode uses high level flashes. About the best I've seen for rear light visibility.
    Thanks. I've been looking for a quality rear light at a reasonable price for a while now. I'll be ordering two, one for me and one for my gf.

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