With PSP-Info you can see information about your PSP.

In this version:

Battery:
-Temperature
-Voltage (milli)
-Charging (true/false)
PSP:
-CPU
-BUS
UMD:
-Disc (true/false)
WLAN
-MAC Addres (this isn’t working good)
-Swicht (true/false)

http://forums.qj.net/showthread.php?t=130772