I am curious what is the brightest 10440, pocket or keychain flashlight, one I have so far is the folomov edc1, 400 lmn.
The Lumintop Frog can get up to 750 lumens with a 10440 battery. Older models can even be updated to Anduril 2.
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The brightest is probably the Lumintop GT Nano Pro, it has 3 emitters and around 1200lm. Older models can even be updated to Anduril, though it is very tricky soldering.
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Keep in mind that “brightest” might last all of 3.5sec. Might as well be a flashbulb…
I think The Flasholic tested the GTNano and that’s about as long as “turbo” lasted.
And let’s not forget that 200lm vs 400lm will only visually look about 30% brighter 'though double the lemons.
Yeah, I know, “glass half-empty”…
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I forgot about this one, didn’t know it used to come with the V1 driver.
My brightest 10440 flashlight is Manker E02 II but that is only 10440 light that I have 
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