If You talking about the Combustion Fan? it's NOT in the hopper, it should be mounted below the stoker unit.
It probably doesn't draw much, Less than an 1 amp, CFM is probably around 30-60CFM? I think?? .
but the guys from LL could tell you exactly what it is
YOU REALLY NEED the combustion fan to run the stove to keep the fire burning, otherwise you would have to run a Hand Fed stove that doesn't require any electricity.
You can look on the LL Site it tells you.http://www.leisurelinestoves.com/
Leisure Line Stoker Stoves Power Draw
Feeder Motor - .55amps
Combustion Fan - .58amps
Convection Fan - 1.86amps
Power Venter - 1.77 amps or 136 watts