INSTEN® is a registered trademark. Only authorized seller of INSTEN® can sell under INSTEN® listings.All rights reserved. All trade names are registered trademarks of respective manufacturers listed.Never run out of battery power when you are about to score the winning point. Save money and protect the environment by using the rechargeable battery. Battery need to be charged before first use. Voltage: 3.6V. Accessory ONLY. Sony PSP not included. Compatible With: SONY PSP 2000 / PSP 3000