Tesla Vortek and the eLeaf 50 WATT

Alright I'll make this short and sweet! Bought a Tesla Vortek tank yesterday, just got done burning my 6th coil. Yay me. I'm not an inexperienced vapor and I know to prime my coils and let them sit. I've been through .5 and .2 ohm coils and they both burn out. I'm thinking it may be my battery causing this issue, but I have never had an issue with my Arctic sub tank. I will try tomorrow to prime my last coils for the Tesla and try it on my buddy's Penny mod to see if it starts to burn there. Then I will know if its the coil/tank and not my eLeaf. His mod only produces 35 watts so I will know very soon if it will burn it as it has burned on me at 30 watts. Any suggestions to what I should do? And if it is my battery then what mod should I go to next? I don't have tons of money and would like at least a 50W device. Thanks for the help I'm desperate!