I am new to this hobby and have a 2-3 pack of smokes a day habit. Today, my order of this unit arived in the mail. I put a cart in the unit right out of the box and started useing this at once. The battery was uncharged and I only got to vape for a short time (2 hours) before the battery started to run down. I am sure thats because it wasent fully charged from the factory. The elegant worked without primeing and helped me to only smoke 3 cigs for the whole 9 hour shift at work. I have it on the charger tonight and will realy put it hard to work tomorow with my 16 hour shift and will update again tomorow night.