Originally Posted by
Ziemas
Here's a comparison of NiMH and alkaline in the same light. Lumens and runtime are plotted. As you can see, NiMH wins hands down.
Nice. Looks like this particular light (Fenix L2D CE) uses two AA cells and is rated at 135, 80, 40 and 9 lumens -- so it looks like the Y axis is lux, not lumens. (Not that this changes the graphs at all, only the units.)
Just how well the E2 lithiums perform is quite interesting too. But I'll stick with rechargeables for my bright/commonly used lights -- the cost savings is quite substantial.