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More like this:
http://www.laptopbattery.net/universalbatteries.html

My external battery is for a laptop.
It outputs 16v, 20v, etc. It has a capacity of 130W.
So it is BIG!!
But can i make it output 8,5v or 9v?

Does anyone know of a good resource about DC converting?

Thank you for input. It's a playstation 2, the slim one.
I really don't know how much power it's using, but the adapter says it's 8,5 volts.

Anyone tried to do this with a pstwo?
Maybe someone who has made a portable?

Hi! I have an external battery that outputs 16v or higher.
And i wonder if I can use this with my pstwo, if i divide the output to lets say 8,5v or 9v since the pstwo powercord outputs 8,5?
How is the best way to do this with an circuit?

Any suggestions will be appreciated.

is somebody interested in writing a tutorial on all that for me? I really would like to make some. One for me, and my mom!

I found this video at youtube.
Its an usb nes controller with games built in it.

http://youtube.com/watch?v=Ync0SBjXqrc

I wonder if this is possible?
And how do u make one like that?