And some Alkalines test at more than 2500 as well as some NiMHs, the problem is that the average user is not going to spend the kind of money necessary to get the quality cells necessary to achieve those outputs, and a typical AA is closer to 1100. Also, one has to consider the actual drain supportable by the batteries in use. NiMHs have a great power curve, as do lithiums, but alkalines and particularly carbon zinc, have a tendency to lose output strength as they heat up from drain, and heat up more, etc. etc.KD5NRH wrote:Not sure what gives 2500, but Sanyo Eneloops are at least 2000mAh, and Energizer e2s are 2300.jimlongley wrote:Noted a couple of things reading the description. First, the output was tested using a 2500mAh NiMH battery. Second, the run times are based on the test and, Third 8 AAs will not give you anywhere near 2500mAh.
When an attacker needs to be blinded, there's no such thing as too bright. 760 lumens is, AFAIK, still a long way from "certain permanent damage from a brief flash." Afterall, the Borealis is over 900, and I haven't heard of any permanent blindings from it.That "Turbo" mode would be too bright for anything useful except maybe a mauntaintop searchlight or signaling ships at sea over the horizon.
My problem is with any of that kind of advertising "It will perform this way under ideal conditions." Like the Sear ad where they show the person pulling a dryer out of the washer and state that the water and energy savings of the washer will pay for the dryer. It sure will, if the washer lasts 11 or 12 years and energy costs stay as "low" as they are now, and water stays as cheap, and if you only do the ideal loads.
I do not know how many lumens it takes to blind someone permanently, but it happened back during WWII in Edgerton's lab.