Need a little advice

[Gtsmash]

Hey guys I need a little help on a mod I'm planning to do on my GC.
I plan to use the 5V mod so I wont need to have a 12V input but the thing that I am a little confused about is the screen I've been looking at.
http://www.ebay.co.uk/itm/3-5-TFT-LCD-C ... 4897.l4276
It states on the description of the screen that it uses a 12V DC power supply (all the other screens I have found also uses this), does this mean that I will have to buy a 12V or higher battery to power it? Or will I be able to get away with a 7.4V battery? Just thought I'd ask before I purchase any items.

Oh and one more thing, due to the fact that it costs a fortune to ship products from BatterySpace to the UK (almost around $60) and that its super hard to find a decent battery site/ shop over here. Would 2 of these batteries be sufficient to run a gamecube and a screen?
http://www.batteriesplus.co.uk/acatalog ... .html#a137
Sorry for the noobish questions but I've been reading round the forums for a while and I've gotten myself confused.

 

[Spiicyice]

A 7.4V battery should be just fine for that screen. As for the battery, it should run a portable gamecube, but you are going to need a lot of space. There are 8 cells in one pack and you want to use two, so I would try and go for a Lithium/Lipo battery pack.

 

[Gtsmash]

I would try and go for a Lithium/Lipo battery pack.

I spent all night looking for a site that sells Lithium battery packs that delivers cheap to the uk but had no luck. Also I found an old 9.6V Ni-Cd charger in my garage which I can hopefully use with the batteries I linked to first.
I forgot to mention this in my first post but does anyone know anywhere in the UK where I can get a WASP 3 or a WiiKey Fusion? I've looked around and the only site I could find that was selling them has the price super high.

 

[vskid3]

NiCd? No. 750mAh? No.

Go for at least NiMH and 3000mAh if you want it to be worth doing.

 

[Gtsmash]

I've spent the day looking around the internet and doing some research on what I'm planning to do and I managed to find a small number of UK battery suppliers, Granted most of them only sell custom made batteries but I messaged them for a few quotes on different sized Lithium Ion batteries and now I'm just waiting for the responses. Thanks on the advice so far its really appreciated. Still cant find a Wiikey fusion though