Bike Wrenching – Refurb of Old Light System

Matthew is working on a refurb job for the light on his wife’s old coaster bicycle. The original light had two D-cell batteries that had corroded away years ago and lamps that may be hard to replace, but it has a great tactically pleasing switch and body that he hopes to preserve. We discussed options for putting LED lighting in the body of the light. He has a ton of space to work with so I’ve gone oven to Adafruit and tossed together a wish list of items to use to refurb this. Yeah, it’s probably overkill, but it’d be an amazing light.

I’m not sure what to suggest for the best LEDs to fit the purpose. What do you guys think?