MiOne’s awesome Slim Battery takes its name from its extremely compact, sleek, and portable design! This innovative eGo-compatible battery raises the standard for eGo batteries by offering satisfying and powerful performance in a slim and portable package! Engineered to perform especially well with concentrates and thicker oils, the Slim Battery from MiOne delivers loads of power to your favorite cartridge for an unmatched vape! The Slim Battery includes a variety of advanced features rarely seen on eGo-compatible devices including three power output settings, an integrated Micro USB charging port, and informative battery indicator. Impressively, the Slim Battery houses a long-lasting 380mAh built-in battery cell into its startlingly slender form. If you’ve been looking for eGo-compatible power in a pen-sized package -- add the Slim Battery from MiOne Brands to your VaporFi order today!