Unfortunately, most "automatic" batteries are mere wishful thinking. The thing with automatic batteries is they are full of issues. You may have to draw really hard or sometimes it won't fire. I think most of us would be happy if there were eGo's made with automatic batteries that actually worked well. Even if you do find an automatic eGo battery, it will probably not be reviewed as working as it claims it does. The upside to this, is that with the variable voltage eGo batteries now, you can buy a 'mid size' that will actually be a big step up. I would caution you to maybe only get a 650mah battery though. I have a 1300mah VV eGo and it is quite long, certainly not something I really would want to bring out of my house with me.