Sony PSP Instruction Manual page 14

Estimating the battery charge time*
Charging with the AC
adaptor
Charging with a USB
device
* When charging a battery with no charge remaining
Hint
It is recommended that you charge the battery in an environment
with a temperature of 10°C to 30°C. Charging in other environments
may not be as effective and may lead to less than optimal battery
performance.
Estimated battery duration
Gameplay
Video playback
* 1 Based on tests conducted with the system in single player mode,
with headphones in use.
* 2 Based on tests conducted using variables of system speakers
versus headphones, volume level and screen brightness level.
Hint
Battery duration may vary depending on the type of content being
played, conditions of use and environmental factors. Battery
duration will decrease with repeated usage and age.
14 14
Charging the battery
Approximately 2 hours 20 minutes
Approximately 4 hours
Approximately 3 - 5 hours* 1
2
Approximately 3 - 4 hours*
Battery life
The built-in battery has a limited life span. Battery
duration will decrease with repeated usage and age.
When battery duration becomes noticeably short, contact
the appropriate PSP customer service helpline. Details
®
are found within the contact information section at
http://eu.playstation.com/support.
Hint
Battery life span varies depending on how the battery is stored and
the conditions of use, including long-term environmental factors
such as temperature.