Gemini Olympia 2100 6-cell bike light – in brief review

Tunable light with long run times

Our rating 
4.0 out of 5 star rating 4.0
GBP £219.99 RRP | AUD $349.95 | USD $329.95
Gemini Olympia 2100 6-cell bike light

Our review

If you enjoy extended night-rides, this long-running light is worth a look
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Gemini’s Olympia is a usefully powerful and reliable light with epic run times for the money.

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The three-LED head fits any size of bar with a selection of O-rings, and helmet and head strap (useful for camping and late-night race prep) mounts are included. The battery is small enough to mount easily on most bikes too.

It’s not the brightest ‘2,000-lumen’ light, but the beam mixes decent peripheral coverage with plenty of central detail and reasonable reach.

The output of the three power levels is easily tunable. There’s a flash setting between the low and high modes, which is a bit irritating, and another downside is that there’s no output indicator or life display besides a low warning. Having said that, the Olympia 2100’s huge run times mean the latter is not an issue on the trail.

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The reliability of all Gemini lights that we’ve had on long-term test has been excellent too.

Product Specifications


Name Name, 0, 10, Name, Olympia 2100 6-cell (14)
Brand Brand, 0, 20, Brand, Gemini

Description Description, 2, 0, Description, Lumens (theoretical) 2,100 : Run time 5hrs 25mins
Weight (g) Weight (g), 2, 0, Weight (g), 394