what is an vv/vw battery and how is it better? can it provide a better throat hit?
VV = Variable Voltage
VW = Vairiable Wattage
It can give a better throat hit, just cause you can normally get higher power to your coil, than a non regulated variable battery. More power = more vapor = more throat hit (as a rough generalization this is true... you can over do it, and some flavors dont like high power vaping).
With your current battery.. you are getting 4.2V right off the charger, and it slowly drops to 3.5v (or something like that) as you use it. With a stick type battery (similar form factor to what you have, that is VV you can get 4.8v the whole time...BUT it will mean the battery needs charging more often)