Wii Laptop Battery Help

[stanokaka]

Hey,
I'm planning on building a Wii Laptop and its going to be running off batteries.
But I've got a bit of a prombelm with the batteries.
I don't know what ones I should pick?
I'm stuck between 3 choices:
1)11.1v li-ion 5700 mAh laptop battery
2)12v NiMh 5000 mAh battery (off batteryspace)
3)14.8v li-ion 5000 mAh battery(off batteryspace)

Does anyone know what would be the best battery for the wii? Voltage and mAh wise?
Thank You

AS

 

[XCVG]

Definitely forget #2. NiMh is heavy and large- horrible energy density. I'm not sure but I think the first 11.1V battery provides enough voltage for a Wii.

 

[stanokaka]

Definitely forget #2. NiMh is heavy and large- horrible energy density. I'm not sure but I think the first 11.1V battery provides enough voltage for a Wii.

Would it work if I got a couple of 3.2v batteries and connected them up to eachother so there voltages add up to 12.8v?

 

[Mako321]

Yeah, but it's cheaper to use batteries you already have