What is the battery life? How many hours of continuous use? How do you charge? Etcher Laser February 25, 2019 02:19 Updated Follow The machine is powered by an AC plug. There is no battery or need to charge. Related articles What makes this technology unique? What are the dimensions and weight? What is the laser’s life expectancy ? How does it work? What kind of sensors are you using? Comments 0 comments Please sign in to leave a comment.