Got this result this evening with the Andida 2300 mah battery. Before your eyes pop out of their sockets I must disclose that my sim card is not in the phone. I use my GS2 as my primary phone now but I still use my Vibrant from time to time because it has ICS! (I am running Euphoria) Also, in this 72 hour period I checked my email 5 times, facebook, and took a snapshot of the battery result, then sent the photo to my computer to upload to flickr so I could share it here. The wifi has been on the entire time. I highly recommend this battery!
*Samsung Galaxy Tab 10.1 Wifi / Stock ICS
*Samsung Galaxy S II / T-mobile running CM-10