Put the micro usb charging port on the side of their mods and NOT on the bottom. With the charge port on the bottom of their mods you have lay the mod on its side to charge it so you have to have an atomizer that absolutely WILL NOT LEAK while on its side or you must take your attie off which is annoying. Putting the micro usb charge port on the bottom of a mod takes no less space than putting it on the side, and there are NO other benefits from locating port on the bottom that outweigh the advantage of having the charge port on the side. So PLEASE ask ELEAF to change the location of their micro usb charge ports to the sides on ALL of their mods.