I owuld either run off of the laptops batteries while recieving FAXs then
recharge them at another time. Or find a small inverter that doesn;t make so
much noise.

Doug

"TB" wrote in message ...
Would it be possible to have the house and engine batteries conected in
series to give 24v, step this down to 18v to power the laptop. Then tap
off each battery for normal 12v service. Sorry if this is a dumb
question but I need a dc supply as the inverter interferes with the ssb
radio when receiving weather faxes.
Tony