Compatible with most 510-thread cartridges, but designed for use with Torch cartridges, featuring a touch-activation sensor and accompanying USB-ready charger. This 230 mAh Torch Battery comes equipped with a pre-heat function and three heat settings, low (2.6V), medium (3.3V) and high (4.0V) to enable users to explore the full range of Trailblazer Torch extracts.