I just got mine in the mail as a birthday gift from my Father-in-Law and was super excited to try it out. I put a fully charged EVVA 4500mAh 26650 in it and nothing. I tried another and still nothing. So I tried plugging in the USB-C charging cable and it lit up 100% with a progressive charging icon. I tried turning it on again while plugged in and it blinks on and then immediately off and indicates 2.5v. If the cord is not plugged in there is no power at all.
Does anyone have any Idea?
Not flat top and I put it in the right way.
this is possible
THANK YOU!!!
This was it
once again this community is awesome!
it is now 
Is it normal for the lep to use a lot of power ?Seems like every time I use it the power goes down pretty fast showing on the oled display with a minute or more run time .Is there any magical battery to use?I am using a shockli 26650 35a. Anyone have any ideas? Thanks
I would recommend you to read this review posted in 1lumen.com :
Unbranded 26650 LEP review (Nealsgadgets) | with coupon
and check the runtime graphic in this review:
I guess you will find some answers there concerning the power drop of the LEP lights.