I have a smok Teck dual coil eGo carto and I use it on a joye eGo 1000mAh battery... I like it just fine, been using it on and off for a few weeks ... but has anyone else noticed you have to let it warm up for a few seconds? I mean holding down the button for 3 or 4 secords before you start to hear the crackle / produce vapor?
Never took notice of it being strangely long, you might try a Kgo battery, slightly higher voltage but it makes a big difference. I like the ones from Dark City Vapor