What kind of batteries can compatible with Ayana kit? A: We have a conductive silicone placed with battery, so18650,20700 and 21700 can both compatible with our kit. What Kind of tank compatible with Ayana kit’s mod? A: You can match any tank with our mod. They works well when it has 510 pin and 510 connector. How to put the battery? A: Connect the positive pole of the battery to the negative pole of the electronic compartment, and the convex part to the concave part.