Is the battery user replaceable?
I don’t really understand the emitter options. I got the impression that the main led is an XHP35 HI cool white while the side leds are nw Nichia, but then there’s both an XHP35 HI and Nichia options on banggood. So which is it and what are the emitter specs?
Nice Olight !
EDIT : I hope Lumintop also copied the Olight UI… only that could make me buy one (I will not lie, I love the design of this light)
I corrected the LEDs as listed by neal
(seems Banggood got wrong data?)
Bangood lists Nichia and xhp35 options. I am confused. It should be xpl-HD and Nichia right?
Interested
I’m both interested and confused as well 
So, Banggood appears to have mistakenly indicated XHP35 instead of XPL HD. But did they post incorrect photo images as well because their photo appears to show XPL Hi emitter.
specs seem a bit confusing, raises more questions and need clarification:
“XHP35-Hi” listed in BG
=> Ok… you mentioned BG got it wrong, so the correct option is XPL-HD)
(BG has more inaccuracies, the runtime table lists the flashlight was tested using a 750mAh 16340 battery” => so now it uses 16340??
“Utilizes XPL HD + 4 Nichia 219c with a lifespan up to 50,000 hours”
=> does that mean 4pcs Nichia 219C LEDs? or is “4” just a typo or something?
“Built-in 3.7V/750mAh 14500 Li-ion battery with anti-reverse, overcharge and over discharge protection”
=> maybe this means a 14500 battery is included? because “built-in battery” would sound like non-user-replaceable (then AA wouldn’t be a battery option).
Nice looking flashlight, but would like to know how the main light (XPL-HD) and the side light (Nichia 219C) works
Here is very early review. It answers most questions so far.
If this can charge AA battery, it is the very first usb rechargeable AA flashlight I’ve seen 
From BG’s page:
“*2) To avoid the risk of exposition, it’s forbidden to charge the AA (Ni-MH/ Alkaline) directly via the flashlight.”
It can be designed a few different ways. One way is it detects if the voltage is about 2.3v or higher. If so, it will charge to 4.2 with a lithium charge curve (CC/CV).
If below 2.3, it charges with a NiMh charge curve to 1.5v.
The other option is that it does not charge at all if the voltage is below 2.3v (roughly). This would prevent accidentally charging a AA alkaline battery.
Or perhaps we have to use our own judgment to not use the usb charging when there is a AA battery inside.
Another situation is that it may not even work with AA. It might be 14500 only.
Not sure about this one. 500 lumens is ok for EDC but the XP-L HD is capable of so much more. Wish it were in the 800-1000 lumen area. Not much on the built in battery. I have so many, I would like to be able to change them out. Think it would be great for a gift. Looks cool though.
can one have the front and side light on simultaneously?
Lumintop confirmed they use a xhp35
cell is of course user exchangeable
AA and NiMh and 14500
No.
That doesn’t make much sense. A 14500 battery can not supply the amps needed to run the xhp35 at any decent output (higher output than an xpl). Are they running it at 500 lumen (2.5A-3A at the battery) to get better efficiency compared to an xpl/xpl-hi?
I guess they are using a boost driver anyway so why not ramp the voltage up. If so, the 4 Nichia might even be wired in series for 12v as well.
The output must be really low when using a AA.
IDK, the whole design sounds a bit strange. I’m curious to learn more about it’s driver.
me too.
price: US$ 29.99 for the first 100 orders
(then price raises to 35.99)
This light with a double tail click (1 for the front led, another for the side led) would be nice!
Not saying it is not right now, but it would be nice in a different way (for me).
I’m with others, the 500 lumens on a XHP35-HI… 