[Izzy Dunne]

the machine powered three 100-watt light bulbs ...
The draw on the batteries was estimated at more than 4.5 kilowatts.

How many watts does it take to light up three 100-watt bulbs?
.... Depends on how bright you want 'em...

[Brewer]

How many watts does it take to light up three 100-watt bulbs? .... Depends on how bright you want 'em...

Amps times volts still equals watts..