Coolgo New Laptop Battery for New 10.8V Battery For Mac MacBook 13" 13.3" Inch A1181 A1185 MA561 MA566 Black 10.8V 55Wh Black MacBook 13 inch A1181 MA472 MA472*/A MA472B/A MA701 MA701B/A MB404*/A MB404LL/A laptop battery for Apple A1185 MA566 MA566FE/A MA566G/A MA566J/A Quality Certication: All the products pass the ISO9001, CE and ROHS, FCC multiple international authentication and completely accord with environmental protection requirement. Consummate Design: Excellent design makes the product not only has the overcharge, discharge and short circuit multiple protection, but also to balance charge-discharge of all the internal cells. Environmental Test: Standard modern assembly line. All products have passed a variety of charge-discharge and aging test before they leave the factory. 100% quality test for all items. Operation time: For standard battery(6-cell, 4400mah): 2-3 hours; for extended battery(12-cell, 8800mah): over 4 hours (Note: The actual operation time depends on how much electricity is required by the device and how you use the battery.)