I just bought a power inverter for the car (converts the cigarette plug DC to AC for plugging in small items, such as PS2's or laptops, etc.).
Output is rated at 90 watts: 120 V(AC), 60 Hz.
Input is of course of 10.8-15.8 V(DC), 10 A max.
Now I bought it for a lot of reasons, but primarily to use my PowerBook when on the road. The PowerBook's AC/DC transformer adapter is rated at:
Input: 100-240 V(AC); 50/60 Hz, 1.5 A
Output: 24.5 V(DC); 2.65 A
The adapter also mentions "65 W" which I take to mean its output wattage. ("Apple 65W Portable Power Adapter")
My dad has reservations about it being safe to use with the power inverter, as the wattage it is able to input up to is greater than the output wattage of the inverter. Would this be safe to use, or would the power draw pop either the surge protector built into the inverter, or worse, a fuse from the Contour or from the PowerBook's adapter? I would like to go and get a direct DC adapter for the computer to avoid this DC-to-AC-to-DC mess, but I'm not about to spend $79 for one and the inverter ($34 after discount) is far more versatile.
Thanks!