Oh, I agree. manufacturer's estimates tend to be on the generous side under optimal conditions. I'll likely toss a spare set of AAA's in my Camelbak. I might try that runtime test out of curiosity.

I also picked up a 220 lumen nebo Redline the other day. About $5 less than the Coast, and it has multiple brightness levels and a flashing mode. I like the beam pattern of the Coast better, however.

On a related subject, the best handlebar flashlight mount I have tried so far has been this rubber block and velco affair for $2.39 from DealExtreme. Very versatile in where I can place it and it holds fairly steady without vibrating the light a lot.