[Matrinka]

How Do I Pick A Power Inverter? I am about to go on a trip and need a power inverter to power my laptop while in the car. I don't know how to choose how many watts I need.

The brick on my power cord says it is:
Wide Range Input
Input: 100-240v ~ 1.5A(1,5A) 50-60Hz
Output: 19v --- 4.74A(4,74A) 90W Max

What should I be looking for in an inverter?
I am thinking of buying the Duracell Mobile Inverter 100. Its specs are:
Output (5min) - 100w
Output (continuous) - 80W
Input Voltage Range - 10.5 - 15.5 Vdc
Output Voltage - 120 Vac 60Hz

Thanks for any help given! I genuinely don't know what to do with these numbers. I appreciate your answers!

[leroys1000]

Might want to kick it up to 150 watt if you actually
need to use an inverter.
Would be easier just to buy a DC adapter for
your laptop model that can plug into a lighter socket.

[K7M]

This is what I would use as a minimum.
http://www.walmart.com/catalog/produ...ct_id=10746774
The 100 watt you are looking would heat up rather quickly and fail. I use a 100 watt with my laptop but it only requires 65watts. The DC adapter for the laptops are quite pricey.

[JohnWill]

I'd consider buying a universal laptop power supply. First off, it's more efficient, since you only have one power conversion, not two that you'd have with a standard 110V inverter. Second, it's normally a lot smaller and lighter.

Here's the one I have, though I got it for a fraction of this price: http://www.amazon.com/Kensington-K33.../dp/B0007W1K8M