I bought this box mod from someone who makes them on Facebook. He seemed like a reputable person with a lot of positive feedback. But a year has passed, I am having trouble with my box and I can't get ahold of him. But here is my problem: The only time my box works is when I plug it into a charger. As soon as it is separated from the charger it shuts down. Im on a Mac, so is there anyone who can help me? Its a DNA 200 chip attached to a 2200 Mah battery.