Puredick New High Performance Laptop Battery for Toshiba PA3817U-1BRS PA3819U-1BRS Series - 12 Months Warranty [Li-ion 6-cell 10.8v 5200mAh/56Wh] Battery Type: Li-ion || Voltage: 10.8V || Capacity: 5200mAh/56Wh|| Color: Black||Cells: 6-cell 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. CE-/FCC-/RoHS certificated for safety,12 months warranty,professional technical support, efficient and always satisfied customer service 24 x 7 email support. Operation time:Same Battery life with Brand new original Toshiba battery.In reality, this will depend on the amount of electricity required by the device and how you use it