An electronic cigarette apparatus including a first and second modules; the first removably connected to the second; wherein the first module includes a male connector, a tank, and an upper portion; wherein the second module includes a lower portion which removably connects to the upper portion of the first module to removably connect the first and second modules; and wherein the second module further includes a female connector and a battery device. The lower portion may include a top section having at least two tabs; and wherein the upper portion includes at least two slots into which the at least two tabs of the lower portion can be inserted to connect the upper and lower portions. The upper portion may include one or more ledges which assist in preventing the lower and upper portions from disconnecting, unless the upper portion is rotated with respect to the lower portion.