in laptop mode, the battery lasted for 14.1 hours browsing non-stop running on 3G. While not exactly 102 hours, it still represents a decent showing. The figures are from Asus' own in-house testing which also revealed battery life of 2.6 hours using Wi-Fi in phone mode, 10.7 hours in tablet mode and 17 hours in laptop mode. Running on 3G, the battery lasted 2.1 hours in phone mode, 8.9 hours in tablet mode and the already mentioned 14.1 hours in laptop mode. The PadFone Station (tablet) and the PadFone Station Dock (keyboard) do jack up the battery by a factor of 5 and 9 respectively. After all, the phone has a 1520mAh battery and the Asus PadFone needs to get the energy level pumped up when the device is used as a tablet or laptop.
By the way, the promotional video that mentioned the 102 hour battery life has been pulled from YouTube.
source: ChineseEngadget(translated) via Engadget