Having your PSP suddenly run out of battery life while you are entering the final stage of your favorite game can be devastating. Even worse would be if when you notice your PSP's battery will not seem to hold a charge. This could be due to a faulty charging cable, a burnt-out battery or the interference of software you have downloaded. Solve these problems by testing your PSP to locate the charging problem and proceed to implement the correct solution.
Revert to Factory Settings
Switch the WLAN button on your PSP so that it is in the "Off" position. Remove any memory stick or UMD that is in the system and put them aside.
Choose “Settings “ from the left side of the cross media bar. Scroll to “Restore Default Settings.” Press “X” to enter this menu. Press “X” to accept the restoration. The PSP will then revert back to its original settings.
Power off the PSP and plug it into an outlet with the AC adapter to charge for three hours. Power on the system to see if if the charging issue has been resolved.
Power on your PSP and scroll to the far left of the cross media bar. Choose “System Settings” and press “X.” Scroll down the System Settings menu until you reach the option for “USB Charge.” Press “X” and switch the setting to “On.”
Return to the "System Settings" menu and choose “USB Auto Connect.” Make sure the Auto Connect setting has been turned on. This allows your PSP to enter USB mode and begin charging whenever it is connected to another device.
Connect the PSP to a powered on PS3 or PC using the USB connector cable. The small end fits into the top of your PSP while the large end is inserted into a USB slot in your chosen system. The PSP will automatically enter USB mode as soon as it is connected.
Leave the PSP attached to the system for 30 minutes to an hour. When you detach your PSP, check your battery power. If it has gone up, then the charging problem is with your AC adapter. You can replace it or continue to use the USB charge function.
Plug your PSP into an outlet using the AC adapter cable and power on the system.
Enter the “System Settings Menu." Scroll down until you reach “Battery Information.” Press “X” to open the menu.
Check the last option on the page which is labeled “Battery Status.” If the status does not say "Charging," then the battery is not receiving a charge from the cable. While your PSP is getting power from the cable, you will need to purchase a new battery.
If your battery charges but then runs out after a few minutes, this is another sign of a faulty battery.