Pure evil 18650 battery 3000mah 40ar fuel unholy clouds with these pure evil 40a 3000mah batteries for use with high wattage mods these lithium ion batteries give a great hit and will last a lot longer in your sub ohm mod than lower capacity cellsr whats in the box 1 x pure evil 40a 3000mah batteryr tech spec type li ionsize 6505 x 182mmweight 60gcolour blackwhitebattery capacity 3000mahmax discharge current 40avoltage 37vcycle life over 800 charges