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After having read at least 7 other threads on this issue I am still confused as to what I should buy as a power adaptor.

I have a 17" Dell Inspiron E1505

the battery is GD761 Rating 11.1V Capacity 53WH (all of which means absolutely nothing to me...i'm just transcribing )

I want to be able to use this laptop for video viewing/ gaming on Continental flights.

A number of the eariler threads seem to offer a solution but with caveats for both Dell brand laptops and for 17" screens.

So...... what should I buy?

Thanks again