I recently ordered an Alienware m14x laptop from Dell. It comes with a 150 watt charger. Whenever I go on long road trips, it's really really nice to just have a laptop and play games or something the whole way. The vehicle I usually travel in has a thing on it's dc outlet saying 120 watt max. Here is a picture:
I've run a 90 watt Dell Latitude d620 (plugged into a 100w power inverter) along with two 8 watt dvd players and a 3 watt gps before. So 100+8+8+3=119. I've been missing the limit by only 1 watt the whole time and didn't even know it until I checked it just now.
What happens if I go over 120 watts? Will it blow a fuse? I haven't been able to find the exact specs of my alternator but the lowest amps i've ever seen on an alternator's description is 100 amps so I find it hard to believe the alternator I have in there generates only the 10 amps it would take to make 120 watts.
So is the 120 watt thing on there because of a fuse that will blow or is it just a false warning to prevent stupid people from running down the battery while the engine isn't running?
I just want to know if I can lazily plug a big 800 watt power inverter into my dc outlet without anything bad happening or if I have to somehow run some wires directly from the battery to the interior of my car?