Traduciendo paso 2
Bottom of logic board, with and without the EMI shield.
We're very happy to report that Apple didn't solder the battery! The iPad uses the same battery attachment system as the iPhone 3G and 3GS.
It looks like this board was made by AT&S. It will be interesting to see if their marking remains in the final production board. We haven't seen Apple's PCB manufacturers brand their boards before.