External rechargeable Li-ion battery with high capacity (2800 mAh) to extend the playtime of your PlayStation Portable with up to 5 hours 

 
  Details
 

Fully charged within 4 hours; equipped with integrated battery power tester with 4 clear charge indicators
Equipped with a stand to view your PSP movies from a convenient angle
Powered and charged via the original power adapter of your PSP
The external battery and the battery of your PSP can be charged at the same time (parallel charging)
Can also be used to fully charge the empty battery of your PSP on the road