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Elops ST520, Front/Rear LED USB Bike Light

Sale price: $34.99 Regular price:

Front and back rechargeable LED light kit with a continuous and flashing mode for being seen both day and night.

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Sale price: $34.99 Regular price:

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San Francisco, 735 Market St. Options

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Model: 8281184

Product Features

A photo of the Elops ST520, Front/Rear LED USB Bike Light in use

Elops ST520, Front/Rear LED USB Bike Light | Our design teams have developed this rechargeable lighting kit for BEING SEEN. It's versatile to keep you safe on rides all year round!

Front and back rechargeable LED light kit with a continuous and flashing mode for being seen both day and night.


Power: 5 to 20 lumens Continuous or flashing mode

Battery life

Flashing mode: 9 hours Continuous mode: 5 hours Rechargeable via micro USB


WHITE (1 mode) and RED (2 modes) Universal elastic mount


IPX 4: withstands spray and heavy, persistent rain.

Product Customer Reviews

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3208 Reviews
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Elops ST520, Front/Rear LED USB Bike Light,black
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Works well

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All good


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Good stuff

Happy with the purchase, battery is quite good

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B’Twin ST 520 front led USB bike light set black

No strong enough and get flat quickly

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A much improved addition to the range

The addition of flashing feature greatly improves the light set from what was available I’d only suggest the rear light be able to be mounted vertical to tuck in on seat post more aerodynamically

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Bike lights set

Good quality and easy to use.

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No longer charges

I Purchased 2 sets almost two years ago for myself and my son but used only a handful of times, they no longer hold their charge. Would not recommend.

Poor quality battery

Battery in both is completely dead, won’t even hold charge for 1 second. Shows green when plugged in. As soon as it’s unplugged it doesn’t turn on. Have had them charging for days to no avail.

Were great…until

They no longer hold a charge even for a few hours not being used. Can’t rely on them for safe night riding.

Bright light; problems with recharging

The light is bright and works as advertised. The problem is in recharging. Even after it shows to be fully recharged (when the charging light turns green), it might not be so. I now recharge the lights by a series of plugging the charging cable until "fully charged" light comes on, unplugging the charging cable and then reattaching it again to the next "full charge". Even then I have no idea if it is really charged up or not.

Front light doesn't t hold charge anymore

Back light is great but front light no longer holds charge. The input port on the device is in an awkward position and I think it's been damaged over time.

Front light no longer works

I have had these lights for about 2 months and the front light no longer works. I have only used them about 10 times and the front light does not charge. I tried charging it overnight and with 1 minute of switching it on, the small red light appears and the light switches off. Not acceptable to happen when cycling in the dark as this is very dangerous.



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Hasn't lasted very long

I've only recharged the front light about 5 times and it no longer holds the charge.

Decathlon bike light set

Great value for money

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Additional Product Information



  • 100% Polycarbonate

Inner tent

  • 50% Pcba
  • 50% Battery - Lilo


  • 100% Silicone


Thanks to feedback provided by cyclists and other road users (drivers, pedestrians, etc...), our design teams have defined optimum features linked to cyclists' visibility. With one purpose in mind: ensuring cyclists' safety.


Battery capacity: 160 mAh (500 cycles guaranteed) LED light power: - White mode: 20 Lumens, - red mode: 5 Lumens.



Product testing

Laboratory tests have been carried out to approve the components: batteries, battery life, UV resistance, durability, etc. The final product is then tested to simulate the durability of the assembly over time. The light is fitted to a test bike to reproduce the vibrations of cycling on a road for thousands of pedal strokes.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual