The Lost Vape Grus mod is a single-battery, classy beast. True to brand, this mod features clean, high-end styling, with premium materials and incomparable hand-feel. With the large tank base and going all the way to 100 watts, this is a great host for a tank or dripper. The Grus takes a single 21700 or 20700 and comes with an adapter to fit an 18650 battery as well, no batteries are included.