Originally Posted by
nkedel
The Dell 130W supplies I tried have tripped the breaker on CX (77W) and AA (77W and 738) as soon as they were plugged in, whether or not the laptop itself was attached, and if attached, on or off.
I have a Dell Precision with the nice 17" screen. It takes a 130w supply and it won't even boot if it detects the old 90 watters. I believe it will
charge with the older supplies, but won't operate.
Some of the 'compatible' replacements apparently don't identify themselves correctly to the laptop, and the machine doesn't want to do anything.
I don't take the Precision with me on a flight if I have any idea that I'm going to be using it in flight. Plus, it's a bit hefty - makes a good desktop replacement, though.
If I really need to do something in flight, I have a Fujitsu LifeBook with a 10" screen and a 75 watt PS - like a tablet except it's got all the things a 'real' computer has (CD/DVD, USB, 1394, etc.)