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ETC Rana 180 Lumen Rear Light



Powerful output and fast recharge, but oversensitive braking function and questionable value
Exceptionally bright
Day and night modes
Quick recharge
Option for mounting
Oversensitive brake function eats battery

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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ETC's Rana 180 Rear Light is a striking option offering plenty of modes, some decent run-times and quick recharge. However, the braking function is oversensitive, and the run-times are very unpredictable and, at times, very short.

The Rana is a simple, functional design: the long strip of LEDs throws out light to the rear and laterally, thanks to a translucent, hard case edge.

The unit is nicely shaped and sturdy – I've dropped it from a height several times and the casing is still looking as good as new. I'd have no worries about its ability to survive a fall from the bike, though this is unlikely as the light locks securely into both brackets.


There are two mounting options for the light. The first is a bracket attached to a silicone band that wraps around your seatpost. It's tapered so the light sits vertically once mounted.

2021 ETC Rana 180 Lumen Rear Light - mount.jpg

It'll go on an aero post, but it's not a great fit. The groove is shallow, so there's a tendency for it to swing slightly to one side. It's also not that easy to get on and off as there isn't enough band to grip after the last hole, which you'll probably need to use.

2021 ETC Rana 180 shallow groove for aero post.jpg

The second mount is a split-arm bracket designed to clamp to seatpost rails. It works well – it has a little flex so it compresses and then widens to clamp. It worked on all of the saddles I tried it on, though that's not a guarantee for every saddle. It's a great design for those who don't use saddle bags.

2021 ETC Rana 180 seat clamp.jpg

The light slots horizontally into both brackets and is secured with a twist and lock. I had no issues with wobble or play from either bracket (aero post excluded).

Charging the battery

The lithium polymer 3.7v battery is charged via a micro USB port, with a cable included. It goes from flat to full in an hour, even when charged from my laptop. The indicator light turns to solid green to show that it's full charged.

The port's cover offers a good seal and I've had no problems with water getting into it. I've had it out in the rain, and left it on while washing the bike without issue. It doesn't look weak and I wouldn't be concerned about it breaking off over time. The unit is IPX6 rated.

2021 ETC Rana 180 Lumen Rear Light - USB port.jpg

The button used to switch the light on/off and change between modes has an indicator on it. This is well placed and easy to see with a glance under your arm while riding (if not mounted on the rails). If it's flashing red, the battery capacity has dropped below 5%. The light also switches to a flashing mode if this is the case. When the light is off, you can check battery capacity with a quick press: green okay; red, charge it. The button itself is easy to locate and activate, even with gloved hands.

Modes and run-times

There are four flashing modes: Breathe, Comet, Interactive and Flash. Claimed run-times here range between 2 hours 20 minutes and 10 hours.

There are three steady state modes: Low, Medium and High. Run-times here are between 1hr 20mins and 3hrs 20mins.

Lastly, there are two smart modes: day and night, with claimed run-times of 18 and 3 hours respectively. Here the light will brighten and dim according to the surrounding light.

> Buyer’s Guide: 19 of the best rear lights for cycling

Some of the run-times have fallen short for me – for example, the claimed 10 hours in Flash mode only ran for 8 hours – but it reached the claimed run-times in constant mode. For example, the high output ran for 65 minutes before beginning to flash for 20 minutes.

In smart mode, it's never achieved 18 hours – the most I've had is 14 – and I think it would be very difficult to have lighting conditions that would achieve 18.

This video shows you exactly what you are getting with regards to modes.

Brake light function

If you switch on the Rana's brake function, you get all of the modes described above, with the addition of the light sensing braking and subsequently brightening, then flashing for three seconds. This means run-times become variable.

I initially thought my urban commute was having the biggest effect – lots of stopping and starting for lights. However, I've established that it's simply very oversensitive, brightening when riding uphill and also on rough, pot-holed roads, which means there's no way to predict how long the battery is going to last. For example, in low steady mode, it's only lasted 1hr 50mins (down from 3hrs 20mins in normal mode); in breathe mode it's been as little as 50 minutes – down from 2hrs 20mins in normal mode.

> 6 tips for cycling at night

It's such a great light in terms of brightness and rapid charging, but I've struggled with the unpredictability of the braking function. As others have mentioned in previous reviews of lights with this function, I am not sure if the technology is absolutely necessary on the road – drivers don't expect a bike to have a brake light, and I'm not convinced that having it will offer more protection than a standard light. I am convinced that I need a bright light, appropriate to the conditions, and the Rana is that, without switching on the braking function and riding round nervously wondering when it's going to go out.


The Rana is a great light in terms of brightness and charging, but it's difficult to call it good value when some of its functioning capabilities are unreliable.

Also, the Magicshine Seemee 180 is £8 less, and I can see no difference in the units. Indeed, according to its packaging the Rana is designed by Magicshine, and as Steve found with the ETC Sarin set, the silicone strap has Magicshine written on it.

Lezyne's Strip Pro Alert Drive costs more, but offers a whopping 300 lumens and (a questionable) braking function for £55.

If you are willing to forgo the braking technology, Giant's Recon TL200 is £34.99, and the slightly less powerful Gemini Juno 100 is £29.99.


Although it has an impressive one-hour recharge time, and modes and performance are very good – if you switch off the braking function – the Rana remains overpriced against its direct competitor; and performance and run-times when used with the brake function are disappointing.


Powerful output and fast recharge, but oversensitive braking function and questionable value test report

Make and model: ETC Rana 180 Lumen Rear Light

Size tested: 180 lumen

Tell us what the light is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

There's no description on Moore Large's site. In short, it's a rear light with a powerful 180 lumen output, multiple modes (including auto brightness and a braking sensor) and USB recharging.

Tell us some more about the technical aspects of the light?

Moore Large lists:


Auto Light adjustment

Auto Brake Sensor

Remaining Battery Display

Low Battery Safety Mode

Multiple Modes plus Memory Mode

Functions: High 180Lm, Mid 90Lm, low 30Lm, Flash180Lm, Breathe Flash , Comet Flash, Intelligent Night, Intelligent Day

Battery: Lithium polymer 3.7v 500mAh

Rate the light for quality of construction:
Rate the light for design and ease of use. How simple was the light to use?

Get your head round taking it out of Smart Mode and you'll be sorted.

Rate the light for the design and usability of the clamping system/s

Great – very secure. Just a slightly short strap if you mount it on an aero post.

Rate the light for waterproofing. How did it stand up to the elements?
Rate the light for battery life. How long did it last? How long did it take to recharge?

Output is very impressive, run-times are very reasonable too, though a few fell short. The braking function seems way too sensitive, so eats battery life and limits the light for rides of any decent duration.

Rate the light for performance:

Impressive output with reasonable run-times with the brake function de-activated. The braking function is way too sensitive, triggered by rough roads and long climbs.

Rate the light for durability:
Rate the light for weight:
Rate the light for value:

It's not great given that Magicshine's is £31.99.

Tell us how the light performed overall when used for its designed purpose

Braking function aside, it's a bright, practical light. It charges super quickly and mounting options are good. Its capabilities with the brake function activated are vastly compromised, though, and the run-times can't be relied on.

Tell us what you particularly liked about the light

Well made unit, quick recharge and good output.

Tell us what you particularly disliked about the light

Poor, unreliable performance with braking function on.

How does the price compare to that of similar products in the market, including ones recently tested on

It's overpriced when compared directly with Magicshine's version. Fabric's FLR30 is £29.99 and less powerful, but seems to have the braking function nailed. Lezyne's KTV Pro Alert Drive also has a braking function, for £30, but only throws out 75 lumens, while its higher output siblings, the Zecto Alert and Strip Alert Drive, are both £40 (neither as bright as the Rana 180).

Did you enjoy using the light? Out of Smart Mode, yes.

Would you consider buying the light? No

Would you recommend the light to a friend? No, I'd direct them to Magicshine.

Use this box to explain your overall score

The braking function is a real let down, and the price needs adjusting to be competitive. Otherwise, a nicely designed, bright light with a good recharge time.

Overall rating: 6/10

About the tester

Age: 42  Height: 173cm  Weight: 64kg

I usually ride: Road  My best bike is: Carbon road.

I've been riding for: Over 20 years  I ride: Most days  I would class myself as: Expert

I regularly do the following types of riding: commuting, touring, club rides, general fitness riding, Getting to grips with off roading too!

Emma’s first encounters with a road 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. 

After a couple of half decent UK road seasons racing for Leisure Lakes, she went out to Belgium to sample the racing there and spent two years with Lotto-Belisol Ladies team, racing alongside the likes of Sara Carrigan, Grace Verbeke, Rochelle Gilmore and Lizzie Deignan. Emma moved from Lotto-Belisol to Dutch team Redsun, then a new Belgian team of primarily developing riders, where there was less pressure, an opportunity to share her experience and help build a whole new team; a nice way to spend her final years of professional racing. 

Since retiring Emma has returned to teaching. When not coercing kids to do maths, she is invariably out on two wheels. In addition to the daily commute, Emma still enjoys getting out on her road bike and having her legs ripped off on the local club rides and chain gangs. She has also developed an addiction to touring, with destinations including Iceland, Georgia and Albania, to mention just a few. There have also been rare sightings of Emma off-road on a mountain bike…

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Hirsute | 3 years ago
1 like

Photo number 4 sriracha !

Sriracha replied to Hirsute | 3 years ago
1 like

It's moving up the rankings!

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