A Nice utility by developer Frostegater for our PSP Genesis competition. It gives you a bunch of useful information on your PSP battery, its temperature, etc… This allows you to identify a damaged or non working battery.
Here is the full list of features from the author:
•Charge Level
•Time to discharge
•Voltage
•Battery temperature
•Identification of the external power supply
•Weak charge
•The availability of battery
•Charging
•EEPROM Access
•Serial Battery
•Mode Battery