In message , aussie bongo
writes

Indeed, and my point that he completely missed the point that asking
"Was it 40W at 18V or 240V", is obviously referring to the conversion
efficiency.

the current drawn at 40w on 18v is around 2.222222222222-amps // but 40w
at 240v is about 6-amps
this do not include the extra power that the inverter needs just to run
its self,

also if you draw 40w at 18v then the inverter will need more than 6-amps
input




sorry the 6-amps should read 0.6-amps
(puts head under jumper in shame)


And only a tit would say "around 2.222222222222-amps"

that's an extremely precise, practically unmeasureable value

--
geoff