EC TECHNOLOGY&reg; New High Quality New 6 cell Laptop 10.8V Li-Polymer 5200mAh Battery For Apple A1175 A1211 A1226 A1260 A1150 MacBook Pro 15", Aluminum Body As Original [Not Plastic]- (12 Months Warranty) Battery type: Li-Polymer; Cells: 6-cell; Capacity: 5200mAh; Voltage: 10.8V. Built with premium materials and undergoing strict QC process, circuit protection ensures both safety and stability. Grade A cells ensure fast charges and low power consumption, Up to 500 recharge cycles over the life of the battery. Operation time for standard batteries(6-cell, 5200mah): 2-3 hours; for extended batteries(12-cell, 8800mah): over 4 hours (Note: The actual operation time will depend on how much electricity is required by the device and how do you use it.) CE-/ FCC-/ RoHS-Certified for safety, 12-month hassle-free warranty.