@SKV89, according to this review from giorgosko it is “Stand-by current (parasitic drain) : 0,014mA”
You can read it here: Review : Utorch UT01 Flashlight (XP-L V6 / AA & 14500 / e-switch)
Ordered one of these 9 days ago at GB and our postal services mailed me that I will get it today. But the 14500 batteries are not here yet so can’t test it fully 
Actually ordered 2, the second one was ordered couple days later.