Old USGI light 240+ hour rundown test

I had my old USGI light i wanted to mod for runtime, not really looking for brightness from this light, I have lights for that, I wanted this to run for the duration of any power outages we might have without changing batteries EVER. It's built with 32 5mm led's on a board, direct drive, the flashlight is 100% stock with only the reflector/light being swapped, I could put it back to incan anytime. My run time test was on new but cheap dollar store primaries, after day 10 I had to call it, its still going but pretty dim.

I would love to show pics but don't have image hosting, if someone wants to see it and will host a photo or two ill gladly email them.