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130W adapter not working in airplaines
I found out that the 130W adapter of my XPS15 9550 does not work in most airplaines. (I frequently have flights > 8 hrs). It seems that there may be power limitations in the 110/220 V buisiness class sockets set at 75 W.
1) is there a way to switch my laptop in a 'don't charge the batteries' mode such that my 130W adapter does not use more than 75 W power?
2) alternatively, what is the minimum power supply capacity that would be sufficient to run my laptop (while not charging).
ejn63
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August 11th, 2016 07:00
The battery charging isn't a particularly big power consumer -- the two biggest:
1. If the system has a GeForce 960m chip, it alone can draw up to 60W of power
2. If the screen is a 4K (UHD) unit, it will also be a big power consumer.
The CPU by itself draws 35-45W, so you MAY be able to squeak by with a 65W adapter if you disable the nVidia GPU, dim the backlight as much as possible, and enable all the maximum power saving features.
Other than that, there's not much you can do.