I am sure this has been asked before, but due too the search feature blowing up (It's not a bug, it is a feature as programmers would say) I cannot find a thing.
ANYWAY has anyone tried Lithium AA cells in Fenix L2D-CE? They start pretty high at almost 1.8V, will this damage the circuit?
I've run my L2DCE on lithiums on a couple of occasions... but I find that lithiums are an expense that is better left for emergencies or truly critical applications.
While the runtime on lithiums is something like 2X-5X the runtime on alkalines (the higher the drain, the worse alkalines fare)... the runtime differences between NiMH and lithiums are nowhere near that magnitude (up to 30% or so).
Since 1 lithium battery costs as much as 1 Sanyo Eneloop NiMH rechargeable battery, I find that it's better for both the environment and my wallet, to use rechargeables.
That being said, I do have a couple of 4-packs of Lithium AAs for those times when I need to use my batteries in extreme conditions... or just need a very reliable source of power.