[REVIEW] Revtronic BT40S bike light

anthon87

Newly Enlightened
Joined
Aug 9, 2016
Messages
68
Hello Friends

I'm going to talk about a light that in my opinion is one of the best for biking
Until now, I've been using a Convoy S2+ with 3B tint, which served me well and I will continue carrying it as a backup.



The light is made in aluminium, with four Cree XP-G2 Neutral White. I think it's a good thing choosing this option instead of one or two higher power leds like XM-L2 or XP-L, because the leds are working in a more efficient range (400lm per led) so in the end we have a lot of light, longer runtimes and less heat.
It's got IPX-6 certification, so it can be used under the raing. However, I don't think it will survive to a inmersion in water.



_1010134.jpg





The box contains all you need to use it:
-The light, with the mounting bracket
-A spare mounting bracket
-2 lens, one is for flood and the other for more throw
-3 rubber rings, to attach the light to the bike, with different sizes
-Wall charger
-Battery pack, 8.4v and 5200mAh. The connector is universal so we can use other battery packs
-Extension cable if we need to put the light at longer distance from the battery
-Head mount, to use it as a headlamp



This light and battery will add 316gr to your bike. 250gr are from the battery

_1010147.jpg





The bike mount is very tight thanks for the rubber rings. Battery is attached to the bike frame with two velcros

_1010150.jpg





The light has four brightness levels, I've measured them and checked that theyre are very close to manufacturer ratings

Grafico.jpg

600lm mode is more than enought if the terrain conditions aren't bad



The light has a led in the switch for battery indication, it will go from green to red as long as the battery discharges:
-Green: 100 to 75%
-Blue: 75% to 50%
-Orange: 50% to 25%
-Red: 25% to 5%, it will start flashling when under 5%



The light comes with two lenses, one with a floody beam, and other one for a more thrower beam. I personally prefer the throwier one because you see farther while still being able to see what's near you. Lens change is a kids game, just unscrew the front bezel and change one lens for the other.


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Here I post some beamshots to compare the spill with both lenses

Flood lens
_1010158.jpg




Throw lens


_1010173.jpg




And for comparison, a convoy S2+ beamshot in the same situation

_1010163.jpg




In conclusion:
-Lots of light, with a smooth spill, it covers a lot of area
-Rain proof
-Neutral White tint
-Nice mode spacing
-Good runtimes, the 18650s battery seem to be from good quality
-Solid construction
-Mount is tight and secure
-Battery indication led so you won't suddenly run out of battery



Link to shop
UK: https://www.amazon.co.uk/dp/B071YF1748/
DE: https://www.amazon.de/dp/B06ZXYHQXR/
FR: https://www.amazon.fr/dp/B06ZXYHQXR/
ES: https://www.amazon.es/dp/B06ZXYHQXR/
 
Last edited:

Knapweed

Newly Enlightened
Joined
Jun 14, 2015
Messages
8
Excellent review with very informative photos. It convinced me to just put in an order. :D
 

CaptainBrock

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Joined
Nov 14, 2012
Messages
44
Great review, thanks!

Not sure about that indicator light staring back at you, wasting power and impairing your night vision.

Dig the bike rig, but that computer wire snarled around the brake cable needs some love.

Ride on, ride on, ride on! — Brock


IMG_pene_8.jpg
 

tomzarbo

Newly Enlightened
Joined
Apr 22, 2017
Messages
33
Location
Southern, NJ
Very informative, thank you for posting this. The convoy has an on/off area where the light starts, the revtronic is much more natural to me. What is the approx run time At the 600 lumen level?
TomZ
 

sbslider

Enlightened
Joined
Jan 8, 2017
Messages
287
From an online provider in the US -

[FONT=&quot]Output / Runtime:[/FONT][FONT=&quot][/FONT]
  • Turbo - 1600 lumens / 3 hour.
  • High - 1200 lumens / 4.2 hour.
  • Med - 800 lumens / 6.3 hours.
  • Low - 480 lumens / 12.8 hours.
Guessing from above the medium mode is the 600 lumen one. Looks like a nice light, I may have to spend more than $30 some day for my bike light . . .
 

tomzarbo

Newly Enlightened
Joined
Apr 22, 2017
Messages
33
Location
Southern, NJ
I purchased one yesterday. I plan on doing some biking early in the morning to avoid all the folks driving distracted on the road. I purchased a decent rechargeable tail light as well. I always said I'd never ride on the road, but I guess I'm going to have to risk it if I want to get some decent road time on the bike.

Thanks again for the information, it looks like a great light!

TomZ
 
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