the coil is not factored into the amp load on a regulated mod only mechs and pwms
in most regulated mods
they are in series. you put one battery in one way the other the opposite.
IN SERIES voltage is added together. amps are not
in parrallel amps are added not volts
and with a regulated mod its easier to do this
take the low voltage cutoff of the mod
MOST are about 3.2 per cell
so 6.4
now let me see if igot this right
max watts/volts./ efficiency of mod
efficiencey of mod is this
the wiring and board and buttons all cause you to loose voltage along the way
most boards are at least 90% effiecient
do a search on the alien or look in the manual
so my ipv 5 would be
200w/6.4v/90%=35amps
that means i need batteries that can handle 35 amps safely if i want to push 200 watts for long vapes and the entire charge of the bateries
now off course at full charge my batteries are only pulling 26 amps at 200 watts but as the battery drains the mod is going to pull more amps to make up for the reduced voltage
so 25rs are 20ish amp batteries you should stay below 150ish watts to be safe
now i have no idea how efficient he alien is
it maybe be 95% effiecient
but figure that out and figur eout whats the max wattage you should be pushing at low battery levels which are about 6.4v