Say hello to the improved CCELL M3b battery. With three different voltage settings available, this top-rated pen battery lets you personalize your vaping experience. You can fully appreciate the flavor profile and terpenes by using the M3b's lower heat settings. While choosing higher settings will give your preferred 510 thread cartridges warmer, stronger hits. It has a screw-in connector with built-in 510 thread and fits either 0.5ml or 1.0ml cartridges. It has a Battery Capacity 350mAh that delivers a smooth vaping experience. We have the best collection vaping disposables from the leading brands in the world.