Which AA lights do that?
That's the claim for the EagTac D25A MkII using a 14500 cell.
Hmm. I can only find that in a blurb on the product ad page and not in the technical specs. Wonder if it is really true?
I have and use the Ti versions of the Eagletac Clickies. The 1xCR123 is the one advertsied to put out 800 lumen with a RCR123 battery (XM-L2 U4 LED option). The 1xAA versions are 405 lumens if you use a 14500 which it lists as compatible (XM-L2 U4; about half that if you use 1xAA). I have an older version but started carrying the Ti 1xAA versions a few years ago. I use a 14500 Li rechargable in the D3A and eyeball estimates compared to my other lights suggest this claim is accurate.
Some things to consider... the smaller heads mean the light is more floody. Even though the CR123/RCR123 version has more lumens, it has a slightly larger head and therefore a tiny bit more throw, compounding the hotspot, and therefore the usable beam distance. I rarely use my EDC flashlights past 25 yards except for "fun" so I generally prefer the floodier patterns... at least for EDC. Although I have been VERY happy with their Ti versions (and frequently recommend them), I recently purchased an 18650 Clicky (D25LC2 MKII; no Ti option) that I'm not as happy with, and don't suggest unless other options don't work for you.
If you're looking for a less expensive AA that is also focusable and has similar outputs, the Coast HX5 should get you close (345 lumens) with a 14500 Li rechargeable battery (Coast says it works with the 14500 or an AA).
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