[Upgraded Version] Kastar New Laptop Battery (1-Pack) for Apple A1280 A1287 Macbook 13-Inch Series, Aluminum Unibody (2008 Version) [Li-Polymer 6-cell 10.8V / 4800mAh] Kastar Brand Replacement Lithium-ion (Li-ion) Polymer Battery use High Quality Original SONY Li-Polymer 6 Cells; Long Lasting and Manufacture Price. (Need more Quantity and More promotion please search Kastar other listings on Amazon) Kastar Battery 100% decoded and 100% Compatible with Original Apple MacBook Pro Battery. Long Lasting for longer battery life and Cools the battery by forcing cool air through the battery's built-in air vents. Use Integrated Japanese microchip which can control current, voltage & temperature to maximize battery life. Manufacture Price and Include 30-Day Money Back and 18-Month Manufacturer Warranty.