How to Use Feoba 6000 Puffs Vape. Enjoy uninterrupted vaping sessions with a powerful 1750mAh battery. BIG BAR 6000 by Feoba Key Features. 1x Big Bar 6000. 10ml Ultra Clear Views: The 10ml ultra-clear views with 2ml prefilled storage cotton ensure you can keep an eye on your liquid usage and wave goodbye to dry hits.