Originally Posted by chandltp

I have the MagicShine version of this that I used before, but I was getting 1.5 - 2 hours after a year of use. Are there any battery packs that use 18650 batteries that are cheap and easy to swap out? I think I was paying about $40 for each battery pack. To run from dusk until dawn, that would be about $200 in batteries, plus the space to carry them.

I think my 900 lumen flashlight that I have runs about an hour per battery on high.. so I'm wondering if maybe I should just start with strapping that to my helmet and see what it does. It's more of a spot than a flood, so maybe it would be less likely to blind drivers??