Originally Posted by
daredevil
I quit reading after about 4 pages so excuse me if this has been mentioned.
Whatever you pick, use lithium batteries. I've heard alkaline powered lights dim as the battery weakens. And the aim of the light is really important.
I'm going to have to politely disagree. I prefer Ni-MHs. From my measurements they hold voltage more steadily than alkalines (but not as well as Lithium-Ion). Also lithium batteries run at a higher voltage which may be damaging to some devices. Some lights have their own regulation which will provide more constant brightness regardless of the battery type. Lithium batteries do provide more energy than the other types, but IMO using primary cells is generally a waste of resources.
2 c