Battery type: Li-ion: Capacity: 2600mAh: Cells 4: Voltage: 14.8V Compatible Models: IdeaPad S300 / S310 / S400 / S405 / S410 / S415 / S310Touch / S400Touch / S410Touch / S415Touch Compatible part numbers: 4ICR17/65 L12S4L01 L12S4Z01 Operation time for standard batteries(4-cell, 2600mah): Around 1.5 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. All DTK batteries are UL/CE-/FCC-/RoHS certified for safety and packed with a variety of safety features, including short circuit, overheat, and overload protections.Strict guidelines for compatibility, and standards compliance for environment safety.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.