Puredick Li-Polymer 9-Cell 7.4V 95WH High Performance Laptop Battery for Apple MacBook Pro 17 Inch with 2 Screwdrivers, Black Battery type: Li-Polymer; Capacity: 95WH; Cells: 9-Cell; Voltage: 7.4V 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. peration time:Same Battery life with Brand new original Apple battery.In reality, this will depend on the amount of electricity required by the device and how you use it