Island hobbies in Kahului told me I could expect to get 3 to 5 months out of their starter vaporizer. It lasted two full charges. For me about three weeks. When I took it back they told me the only thing they could do was sell me another. They would not guarantee for more than ten days. Because they do not make them they will not guarantee them. Thumbs down to this business... Unless you think 43 dollars for less than three weeks is good. I will definitely shop elsewhere.