I was using a 2.5 ohm coil I purchased from a local vape shop that was supposedly a dual coil. When pressing the fire button, it would heat up relatively quickly (~.5-1 second). Recently I purchased a new tank that came with a 1.5 ohm dual coil. I've noticed with this coil it takes about 2 seconds before it heats up. For the record, I did also start using a higher VG juice that is far more viscous than my previous juice on the 2.5 ohm coils. My questions are:
In many reviews I watch online the coils on numerous devices seem to heat up instantly. Is it normal mine would heat up more slowly or is my device defective?
What might be causing mine to heat up more slowly if lower ohm coils are supposed to heat up more quickly?
If low resistance coils are easier to heat, why will they not fire on some cheaper batteries?
Any help or advice appreciated, thank you.