In N01 the Vamo will fluctuate in voltage/ wattage which means if you have it set at 9 watts it will pulsate far higher at times and at other times far lower. This fluctuation is so very quick we don't notice it (the coil gets current 50 times a second)- this the reason some coils get fried.
In N02 the voltage/ wattage is more even with very small fluctuations up and down which equates to more consistent and accurate firing voltage/ wattage wise.
Here's a very detailed vid with charts, voltage/ wattage tests, etc. Very long and technical but well worth watching. It was this vid that convinced me to switch to stacked 18350 batts BUT realize when stacking extra care and precautions must be observed.
In N02 the voltage/ wattage is more even with very small fluctuations up and down which equates to more consistent and accurate firing voltage/ wattage wise.
Here's a very detailed vid with charts, voltage/ wattage tests, etc. Very long and technical but well worth watching. It was this vid that convinced me to switch to stacked 18350 batts BUT realize when stacking extra care and precautions must be observed.