Review: Lupine Betty R 14 4500

In every fight, there is one alpha light

Lights Lights Shootout

2015 Lights Shootout

Lupine Betty R10 Lens

The Lupine Betty R 14 measured much better than last year, since our test apparatus had a powerful fan directed at the light. At 4711 measured Lumens, this shows that this light is true to its claims and that it needs a lot of cooling to get maximum output. But don’t fret if you’re riding in hot nights or are not moving fast enough to give it ample cooling. This light protects itself and saves the battery by throttling down when it’s hot and it gets brighter when there’s enough airflow. We like to think of it as a speed-sensing light since it will get brighter the faster you go.

In every shootout, there has to be a top dog. This year, the Lupine Betty takes the crown by a devastating landslide. They not only spec’d a 4500 Lumen light but they also backed it up. This light is almost scary in brightness level and one really has to look away from the light head or risk seeing ‘stars’ for a moment.

The good news is the light levels are very configurable all the way to 40 Lumens without any flicker at all. This one system can serve many purposes from the longest marathon races to the fastest descent around.

The real novelty is the remote. It is so tiny, so easy to activate and so fast. It has a long range and is dependable and lightning quick. This makes it actually useable and easy to change light levels, as it will be right at your thumbs. This is particularly useful when the light is on the helmet, as one never has to take the hands off the bars.

Beam Pattern Photo

We photographed the lights in the same location setting with the same camera settings. The photos were taken in the back yard that is approximately 25 yards long. These photos feature many objects and a distinct background to analyze detail and beam pattern. Compare all Beam Patterns here »

Lupine Betty R 14 Backyard Beam Pattern

Integrating Sphere Measured Lumens

This light measured 4711 Lumens in an integrating sphere. Claimed Lumens by the manufacturer is 4500 Lumens. The Lumen-hour graph below shows how the light performs over the first three minutes of its battery cycle. Compare all Lumen Tests here »

Lupine Betty R 14 lumen chart

  • Excellent 26 degree, even beam pattern
  • Amazing temperature management that will step down and step up the light brightness based on the air movement and ventilation available
  • It includes a remote that is very useable
  • Insane brightness at 4711 Lumens
  • 7.5 hour run time at 900 Lumens or 1.5 hours at 4711
  • Excellent charger and smart battery with indicator
  • Lupine quality and reputation
  • Can be used with impressive array of Lupine batteries
  • It is $1100
  • Can get hot when stationary and will step down in brightness as the light head is small
  • At this brightness level, it should be wider than 26 degrees
  • At this price, bar mount should be included
  • Price: $1,175
  • Claimed Lumens: 4500 Lumens
  • Measured Lumens: 4711 Lumens
  • Lumens per $: 4.01 Lumens
  • Lumens per gram: 8.89 Lumens
  • Time on High: 2:00 Hours
  • Charge Time: 2:00 Hours
  • Mounted Weight: 530 grams
  • Category: High End
Overall Rating

4.5 Flamin' Chili Peppers 4.5 out of 5 Flamin’ Chili Peppers

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This article is part of Mtbr and RoadBikeReview’s 2015 Lights Shootout. To see all the bike lights tested CLICK HERE.

About the author: Francis Cebedo

The founder of mtbr and roadbikereview, Francis Cebedo believes that every cyclist has a lot to teach and a lot to learn. "Our websites are communal hubs for sharing cycling experiences, trading adventure stories, and passing along product information and opinions." Francis' favorite bike is the last bike he rode, whether it's a dirt jumper, singlespeed, trail bike, lugged commuter or ultralight carbon road steed. Indeed, Francis loves cycling in all its forms and is happiest when infecting others with that same passion. Francis also believes that IPA will save America.

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