Model: PA5157U-1BRS; Battery type: Li-polymer Battery; Voltage: 11.4V Capacity: 50WH/4160MAH Replacement for Part Number: PA5157U PA5157U-1BRS Laptop battery for Toshiba Satelite E55-a5114 E45t-a4100 E45t-a4200 E45t-a4300 E55t-a5320 U940 P000577250 Compatible Laptop Models: for toshiba satelite e55t series e55t-a5320 e55t-ast2n01 satelite e45t series e45t-a4100 e45t-a4200 e45t-a4300 e45t-ast2n01 e45t-ast2n02 satelite m40-a series satelite m40t series m40t-a m40t-at02s satelite m50-a series m50-a-10e m50-a115 satelite m50d-a series satelite m50t series satelite u40t series satelite u40t-a u40t-asp4261sm u40t-at01s satelite u50t series 50t-a u50t-a100 u50t-a-100 u940 series notebook Exclusive Offering of High Performance, Long Lasting, and Durable Grade A Cell Battery Reminder: 1. New replacement battery come with some power, please first discharge and then fully charge. 2. It is best not to completely drain the battery while charging. 3. Don't store the battery for too l