Uploaded March 2016 | Updated September 2026, 1 week ago

---

CLICK HERE for the TEST VIDEO : youtu.be/we4DU6CZKfU
This is part 4 of building the world's brightest flashlight!
¤¤¤¤ -- SUPPORT Ec-Projects -- ¤¤¤¤

By using my Amazon affiliate links (No extra cost for you!)
Amazon US - amzn.to/1kNT3RM
Amazon UK - amzn.to/1OnZ2aX
Amazon DE - amzn.to/1Vt6zqg

By becoming a Patreon for as little as $1 per month
Patreon - patreon.com/EcProjects

¤¤¤¤ ----------------------------------------- ¤¤¤¤