Efest 16340 700mah

Hi i'm new in this forum and i think to buy a D25Cvn V3 of Vinh. I read on the post of D25Cvn V3 and the recommandation is Efest 16340 700 mah for this light and in Canada i found only one seller of Efest (canvape.com) and i don't see the bar code on this battery when i write to him, he said it's real Efest but a old generation it's why his battery don't have the bar code. Does anyone know if this is possible or if it's a way to sell clones or do you know seller of real Efest in Canada.(if i don't found seller of real Efest in Canada i buy of Madvapes but i would rather buy in Canada because cost of shipping and cost of customs and cost of customs clearance.Thank you in advance.