As the best match of CCELL cartridges, CCELL batteries are great examples of our pursuit of perfection. Through numerous tests, our engineers finally achieved the perfect balance between high performance and compact design. While high discharge rate provides generous amount of vapor, the handheld size assures best discreetness possible. Inhale activated, self-adapted optimum temperature setting, and no-button design make CCELL friendly to all user groups. Dart batteries are ONLY compatable with DART pods Remove stopper from pod before use.