I know the ROP topic has been discussed lots and I did try to search for my specific problem.
I did the ROP build with:
- 6D Mag host
- Pelican 3854H
- FM bi-focal reflector
- Borofloat lens
- 6 Tenergy 10000mah D Cells
I charged up the cells, loaded up the batteries fresh off the charger, and turned it on. I was pretty amazed at how bright it was, but the bulb burnt out in less than 1 minute of use.
Did I make the mistake of not letting the cells "level off" its voltage before putting them into the light?