Battery type: Li-ion; Voltage: 14.8V; Capacity: 52Wh/3380mAh; Cells: 4-cell Compatible Models: Fit for Toshiba Portege Z30 Z30-A Z30-B Series, Fit for Toshiba Portege Z30-A1301, Fit for Toshiba Portege Z30-AK01S Z30-AK03S Z30-AK04S Z30-AK06S Z30-AK12S Z30-AK22S Z30-AK31S Z30-AK32S Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. The actual operation time will depend on how much electricity is required by the device and how you use it For first use, please discharge the battery to 5%(not to 0%) and then charge to 95%, and cycle 3-4 times.