This was a good purchase. The battery lasts longer than the original, is very reasonably priced and fits into the original battery compartment. Some of the others stick out of the back end and are bulky, this is like an OEM replacement with more power meaning longer play time per charge.Just wish you could charge the extra battery (out of the PSP) while using the other battery in the unit. All of the charging jacks are used to plug directly into the bottom of the PSP, and I have not found an external charger.