On The underside in the unit There exists the Usb-C charging socket, a few vent holes for the built-in battery, the logo as well as reference for the output region. Using the provided USB C cable, plug the compact end in to the port on the base in the mod. https://bookmarkforest.com/story18936722/a-secret-weapon-for-lost-vape-thelema-solo-dna100c