GeekVape Aegis Mini | 80W 2200 mAh Mod. ... Instead of being powered by an 18650 cell the Aegis Mini features a built in 2200 mAh power source allowing it to be extremely compact. GeekVape calls the Aegis “The Most Durable Mini Mod”! With its mixture of alloy, leather, and SLI silicon it is extremely durable.