The PSP is the PSP-3000 Hunsters
Model with an expanded 2200mAh
battery. It's playing Monster Hunter
Portable 3rd from UMD with Media
Install. The game has been set to the
point just in front of the village leader
after leaving the main gathering spot.
The 3DS is the Zelda 25th anniversary
system with the system's standard
1300mAh battery. It's playing Monster
Hunter 3G and is also set to in front of
the village leader spot.
The Vita is the 3G/Wi-Fi model with its
standard 2210mAh battery. It's
playing Uncharted off a game card.
All three systems are set to highest
brightness and highest volume. The
3DS 3D volume is set to max.
The results:
3DS dies at 2 hours 35 minutes.
Vita dies at 3 hours 47 minutes.
PSP dies at 9 hours.
Video: http://www.youtube.com/watch?v=4u4xyABASlc&feature=youtube_gdata_player
Source: www.andriasang.com/comzfm/battery_test/