Grin ElectroLight Rear

Roll over to magnify and click to enlarge
  • Image 1
  • Image 2

Product Reviews

Write Review

This product hasn't received any reviews yet. Be the first to review this product!

Grin Tech

Product Description

0.6 Watt 8 LED waterproof rear e-bike light with button. 12-100V input range, terminated with DC Power Jack

Please note that this light plugs into the CD jack provided on the Cycle Analyst

If you want to run both front and rear lights from the Cycle Analyst, you will need a DC Y cord

The Grin ElectroLight rear comes with a short wire terminated with a DC 5.5 x 2.1mm jack. To run the light at the back of the bike you will need a DC extension wire.


Our series of ruggedized LED e-bike lights stemmed in part from frustration with all the inexpensive flashing bike lights out there. You know, the $10 plastic lights with two AAA batteries that shatter all over the ground when you crash, that corrode at the battery contacts when you take them in the rain, that unclip and fall from their mounting bracket, or that simply get lost? In 2007, after growing tired of going through 2-3 cheap LED bike lights every riding season, we set out to make a single light you can strap on your e-bike that will last forever and you'll never have to worry about charging separate batteries.

The result of our development is a 100% epoxy encapsulated lighting system that can be run for days under water, driven over with a car, smashed with a hammer, and will still keep running. Our unique manufacturing techniques allow us to include a waterproof on/off/flash button and have the LEDs exposed but recessed to prevent damage. Did we mention that they run off your e-bike battery?


The rear LED light includes 8 red LEDs and a waterproof on/flash/off button. While only drawing about 1/2 Watt of power, the LEDs are visible from quite a distance behind and the translucent red epoxy provides a nice glow in all directions.  As with the Front 12 LED light, the Rear 8 LED light has built in memory, and will remember its on/off/flash state when power is turned off and then reapplied. Rear 8 LED dimensions are 58x24x27mm (2.3x0.94x1.1")