They are rechargable NiMHs.
6 * 1.2V = 7.2V
6 * 2600mAh = 15600mAh ~3h of playing
It does work, I tried.
Hell no. If they batteries had an Output of 2600mA and I wanted to get 7.2V, 2600mA, I would need that many batteries.
But I'm not talking about Amperage, I'm talking about Charge (which is what they store, not what they put out).
So I would always get 15600mAh while it's irrelevant how I wire them.
6 cells in series = 7.2v, 2600mAh
6 cells in parallel = 1.2v, 15600mAh
6 groups of cells in series, in parallel, 36 total = 7.2v, 15600mAh
If you're using AA cells, trust me, not worth the time. Get sub-C sized cells at the minimum. AA cells have such a high internal resistance that the voltage sags prematurely when you're putting too much load on them. My super nintendo portable ran off 6 AA cells at first, I got 40 minutes of play time. And that drew about 1/4 the current your ps2 is going to. Waste of time, get sub-C cells or look into lithium polymer.
I'm going to ask you to lay off the swearing. It makes you look like a dumbass.