I smoked for over twenty years. I started using an electronic cigarette 2 _ years ago. When I first started with ecigs I ordered a kit online of the small rechargables with pre-filled cartridges. The ones that are the same size as a real cigarette. These unfortunately did not have the battery power for me. So I moved on to a basic kit with a larger ego battery. When I started I was ordering juices with high nicotine levels. I don