Originally Posted by
Aawil
What kind of battery life are you getting with these? Thinking about getting one but need at least an hour run time.
A CREE Q5 puts out about 240 lumens at 1 amp, so with AAA NiMH cells which are typically around 700 mAh you'd get about 45 minutes of full brightness, or somewhat longer if the brightness goes down over time.
You might be able to get some more runtime from the high quality alkaline batteries, but they'll turn out to be quite expensive (maybe $3/hour?) versus NiMH.