Wii Laptop Battery Help

[stanokaka]

Okay, so im buying these 12v 5000mAh batteries for the wii.... http://www.batteryspace.com/nimhbattery ... s10xc.aspx
I need this adapter aswell .... http://www.batteryspace.com/connectorad ... lmale.aspx
And this is how im going to connect it all together....
And im going to be using ribbon cable for the extra ground wire as i have been told i could....
But my biggest problem is....
How do i solder the ribbon cable wire on so that i have two ground wires?
One going to the connector and the other to the wii?
Thank You And Someone Please Reply To My Answer ASAP.

AS

[bassmasta]

Those are power wires, so using ribbon cable = bad idea. Especially for a wii.
Get thicker wires.

And just solder both the wii and the screen to the same spot.

[mako321]

The wii easily(apparently) runs at 14.8v, just get a good li-ion pack instead of that big hulk.

[stanokaka]

The wii easily(apparently) runs at 14.8v, just get a good li-ion pack instead of that big hulk.

Would this be good enough?
http://www.batteryspace.com/polymerli-i ... lator.aspx