This is an aftermarket (NOT SONY) 2400 mAh 3.6 volt psp battery pack. It has 2x the battery life than that of regular 1200mAh. New slim design excellent for PSP SLIM and PSP 2000 (all PSP models)

User Reviews about Sony PSP Battery Pack (3.6v - 2200mAh) 20% more power

This product almost fits it description. The battery lasted more than 4 hours. I love the fact that there is no memory effect so I don't have to charge it full to maintain battery life. -- Excellent.

THIS BATTERY IS A GOOD BATTERY I SELL THEM ON AMAZON MINE ARE MADE IN CHINA 3.6V - 3600MAH SAME BRAND SAME PACKAGE 2 OF MY KIDS USE THEM THEY ARE GOOD BATTERIES FOR THE PRICE I WOULDN'T PAY MORE THAN $25.00 WITH SHIPPING FOR THEM THATS WHY I OFFER THE PRICE I WOULD PAY FOR THEM I GIVE THIS BATTERY 4 STARS 5 STARS IF
UNDER $15.00 WELL THATS MY INPUT...KINGCITY831----SELLER AND USER... -- good battery

You'll love this battery pack; it works like a champ on all PSP formats including the new 3000 series. You can play for up to 14 hours without re-charging. Great product and highly recommended! -- Want more power...you got it! No need to charge for up to 14 hours.