This Laptop Battery can replace the following part number:
Toshiba 3ICR19/65-2 　
Toshiba 3ICR19/66-2 　
Toshiba PA3904U-1BRS 　
Toshiba PA3905U-1BRS

This Laptop Battery is also compatible with the following models:
Laptop Computer
Toshiba Satellite Pro R850 　
Toshiba Satellite Pro R850-13Q 　
Toshiba Satellite Pro R850-143 　 　
Toshiba Satellite Pro R850-15E 　
Toshiba Satellite Pro R850-15F 　
Toshiba Satellite Pro R850-16H 　
Toshiba Satellite R850 　
Toshiba Satellite R850-10H 　
Toshiba Satellite R850-127 　
Toshiba Satellite R850-12E 　
Toshiba Satellite R850-12Q 　
Toshiba Satellite R850-12V 　
Toshiba Satellite R850-12X 　
Toshiba Satellite R850-14T 　
Toshiba Satellite R850-153 　
Toshiba Satellite R850-15C 　
Toshiba Satellite R850-15X 　
Toshiba Satellite R850-169 　 　 　
Toshiba Tecra R850
Toshiba Tecra R850-10R 　
Toshiba Tecra R850-10W 　
Toshiba Tecra R850-119 　
Toshiba Tecra R850-11D 　 　 　
Toshiba Tecra R850-12F 　 　 　
Toshiba Tecra R850-140 　 　 　
Toshiba Tecra R850-S8510 　 　 　
Toshiba Tecra R850-S8520 　 　 　
Toshiba Tecra R850-S8530 　 　 　
Toshiba Tecra R850-S8540 　 　 　
Toshiba Tecra R850-ST8500