Battery performance is pretty basic. It'll last you about 8-10 hours with heavy usage (media playing, constant internet use, phone calls) and about 12-15 hours with more standard use.
We definitely had to charge it every night however intensively we used the phone, so it doesn't stand up too well. If you're looking for a handset that doesn't need constant charger juice, then this isn't it.
The Xperia Neo gives good connectivity with HSDPA (7.2 Mbps), HSUPA (5.76 Mbps), WLAN Wi-Fi 802.11b/g/n, DLNA and Wi-Fi hotspot capability.
We found connecting by Mac a bit of a pain in the rhetorical, with the Mac refusing to recognize the connected phone. But after a little fussing and unplugging we were eventually offered the option to connect the memory card, which enabled both drag-and-drop and the Sony Ericsson Media Sync software to recognize the Neo.
Media Sync is an easy-to-use desktop client that allows you to search through the music/poscasts/video sitting in iTunes and add to the phone.
Still, simple as it is, drag-and-drop seemed the easier way to get to all the files on our hard drive that we wanted to transfer (ie films that were stored in other folders). Conversely, connecting by PC was a breeze, switching things around using drag-and-drop method.
Oddly the Xperia Neo didn't seem to enjoy connecting by Bluetooth, getting to the pairing stage but not actually connecting with the Mac and not even managing to find the PC to connect to at all.