This TOSHIBA Portege 650, 650CT, 660CDT, 660CT RTC Battery is 100% compatable with the P71007006050 TOSHIBA Portege 650, 650CT, 660CDT, 660CT RTC Battery. Our batteries and accessories are made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price. All batteries are tested for 100% quality control assurance. This TOSHIBA Portege 650, 650CT, 660CDT, 660CT RTC Battery includes a warranty to guarantee that it has no manufacturing defects.