Richard hasn’t released his boost driver yet, close though, it’s done well in testing so he’ll be listing it soon. 
I go the TK05 in the mail today, on a Windyfire fresh off the charger (first avialable 14500 I saw) it makes 579.6 at start and 508.9 at 30 seconds. The beam profile is ugly with the XP-G3 though. Jaxman’s choice of emitters make for a much better overall light without the need to modify it. 
Jaxman please put a link to the E3 in the OP for our convenience. Thanks.
I have to keep searching through posts to find the link MascaratumB posted.
Thanks for the update on the 17mm boost driver.
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I don’t have one to try, does UT01 work on a flat top?
EDIT: found this answer (post #25): Discussion : - Utorch UT01 - #25 by Jerommel
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Jaxman has good tints but tend to use XPG’s instead of XPL’s, and they don’t like to drive their small lights too hard. So they end up wanting power modded. I think the E3 would be a much better overall light if it had it’s current output levels, plus an added high/turbo level of 500-700lm
Does the Jaxman E3 work with flat-top 14500s?
I have PKCell 14500 (which are flat-tops), and they work intermittently on my couple of UT01 (more often than not, the flat-top 14500 does not work, or if it worked, slight shaking the flashlight will turn it off and not work).
I don’t know I didn’t get one yet, but this makes photo makes me think maybe not?
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Thanks, looking at the + post on the driver I had a feeling flat tops could be in issue,
I’ll stick with button tops then.
hi friends all,
so many threads in so few days…I cant read and reply smoothly, it will need too much time to read every threads carefully……
the middle modes is powered by PWM which works at 500 Hz, and it will not be seen by your eyes. but maybe seen by a camera, and I think the middle mode will be seldom used in most time, so I choose PWM for a convenience. The low and high is not PWM.
Rgs
hi, the design of anti-reversing of battery forbids full flat batteries to work.
So flat 14500 batteries can not be use in this flashlight. You can use 14500 with a little higher cap like AA batteries, and I have this kind of 14500.
if dears cant get the battery,I can give you as a gift——need you leave a word in your order—-only few pcs this battery.
while,if you use 14500,the E3 will lost low and middle modes, it will be only one mode—high mode.
I am worry about if you can know what I am saying…
best regards
The english is not perfect but we understand it fine
I understand completely what you said jaxman
I will get one of these flashlights Thanks for your work!
Oh, and please consider to sell the flashlight host, because we like to make mods here 
I want learn a good English ability from all of you.
I found it is hard to get the truth ability of foreign languages if you are not live in the place of that language.
Ok, since all of us are the man who love DIY, I fully understand what dear all are thinking.
Host is not a problem. but need some time, now we are too busy to making business. Later, we will make a link for the host.
That sounds very nice, thanks for making it possible!
Well done Jaxman! Well done! 
+1 jaxman Thank you very much!!
Thanks! I’ll likely order one and leave a message to request for button-top 14500… Hope shipping flashlight+battery to my country won’t be a problem (unlike shipping of pure batteries)…
Single mode (high only) on a 14500, I take it you’re planning on modding with a different driver?
Anyone else think 22.5mm is kind of thick for an AA/14500 light?
I’d like to know where that measurement is taken, head, tail, or thickest part (anti-roll hex)
I have to wonder will it be much different in size from an E2 or S2+ w/18350
It looks like the E3 is not as lean as the Tool AA but still ok, and it is pretty short.
With the Tool AA, and with my 4sevens mini AA I have the feeling that if I drop it they could deform and the threading gets stuck, the E3 can be overrun by a truck.
Yes I see that, looking at this photo I’d say maybe even overrun by a tank!
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I wonder if the 22.5 mm is the thickest part (anti-roll hex) or the head or the tail?
Jaxman, can you confirm it?
It does look small in this photo.
