Hi- I went to a local e-cig shop and the employee sold me a 5 pack of dual coil cartomizers from Smoketech and said it would work with my stock 510 batteries. Well, after charging the battery I took one drag from the cartomizer and my battery quit. Now the charge only lasts about 5 minutes on a regular cartomizer. It used to last at least 40 minutes. The box has 1.5 oh on it. Is that a Low Resistance carto and is my battery toast? Sorry I'm not really knowledgeable on resistance yet.