Super-bright floody wide-angle headlamp with separate (belt clip) battery pack

Near 180 degree spread? Why not aim for a simple mule construction? Just take your regular LED on your regular MCPCB, no lens, no reflector, and you’ll have 180 degrees spread. Of coarse you will want a protective lens of some sort, so you just need to have the LED as close to the lens as you want to find the angle you want.

Here are a two CRX mule builds to illustrate: