Adding electrical appliances to prius '05

Hello
Anyone know the plug-in wattage limit of the Prius '05 ? I am considering adding some devices that would draw juice from the 12v system. I'd like to get at least 100W out - that's 8 amps, and I don't know if that is possible or not. This would be when the car is parked.

Thanks in advance
JB

 

appliances - why a washer and dryer...
just kidding.
Poor choice of words.
Here is what I am doing.
I want to sleep in back of my Prius occasionally, so I put a foam mattress in. That works fine.
Now, as far as a heater, I figure an electrical 12v electric blanket way to go, since the thinking is - the car will not turn on very often
with a 100W drain of typical 12v blanket. The alternative, running the heater, requires the engine to heat up, then turn on often to scavenge heat from the gas engine. In contrast, charging the battery just involves more occasional charging of the large battery. (Is this true?)
I saw one write-up where Prius owners were running their house electricity (when power was out due to a severe storm) and leaving the Prius supplying the power for days at a time. They pulled 800W or so from the small battery, so my 100W should be a cinch.
My main question is whether I should wire directly to the battery (with fuse), as those cigarette lighter plugs are unreliable.

It wouldn't be bad to also run a small inverter to charge a laptop, etc. Concern there is switching noise being put into the battery circuits. A filter good idea there.

John

 

Thanks - exactly what is "ready" mode? Not that familiar with Prius controls. JB

 

About the efficiency of electricity vs. cabin heat, I believe cabin heat will keep the engine running often, while a 50-100w blanket will not. Just a warm sleeping bag is a good idea along the lines of minimizing engine on time. An open question in my mind...Thanks for replies.