Revolights Bike Light Battery Replacement

Bring your Revolights Eclipse back to life!

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Description
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Files 3
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Components 0
Logs 5
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Instructions 0
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Description

A new charging PCB, battery pack and 3D printed housing as replacement of the original Revolights Eclipse battery.

Details

I love my Revolights Eclipse bike light. Unfortunately the company went down long time ago and nearly all remaining systems should struggle with the battery now. I tried to exchange the battery cell itself but I turned out the charging board itself was damage. So I decided to create a new one to bring the Revolights back to life.

Files

RevolightsBattery.stl STL file for a new housing, a little bit thicker than the original one since I was not able to find the original pogo pins. Standard Tesselated Geometry - 258.38 kB - 09/29/2026 at 12:21		Download
Revolights v8.csv BOM for the PCB Comma-Separated Values - 1.32 kB - 09/29/2026 at 12:21		Download
Revolights v8_2026-09-28.zip Gerber files for the new charging board. 0.5-0.6mm board thickness. Zip Archive - 28.68 kB - 09/29/2026 at 12:21		Download

Project Logs

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Out for a ride...
CF • an hour ago • 0 comments
All parts together
CF • an hour ago • 0 comments

All parts together with a first test of running and charging.
New Housing
CF • an hour ago • 0 comments

The new housing printed in PLA. The button cover is made of TPU.
New PCB
CF • an hour ago • 0 comments

My new PCB comes with a charging circuit using the very common MCP73831 IC, two LEDs (red and blue) showing either the charging or the power status and a push-button to turn the battery on and off. I short push will start the lights, a longer one will turn them off.
Original Battery
CF • an hour ago • 0 comments

After opening the original battery this is what you'll find inside. I bought the plus-version including bluetooth connectivity. Since the App is not available anymore this feature was not necessary anymore.

The charging board itself is rather simple: