DR. BATTERY Brand New Dr. Battery Replacement Laptop Battery Compatible Toshiba Original Battery Part Numbers: PA3757U-1BRS PABAS213 Professional Series battery designed for Toshiba Dynabook Qosmio and Qosmio F/F750 series laptops Built with OEM-grade cells for stable output, reliable runtime, and long cycle life Integrated safety protection against over-charge, over-discharge, overheating, and short-circuit Please confirm your original battery part number and voltage before purchase