Coolgo New Laptop Battery for 6-cells Laptop Battery AA-PB9NC6B for Samsung Q320 R470 R522 R620 - 18 Months Warranty [Li-ion 6-cell 5200MAH] High-Quality laptop battery 11.1V 5200mAh black 204.00*48.20*20.00mm 356.0g laptop battery replacement for SAMSUNG AA-PB9NC6B / AA-PB9NS6B / AA-PB9NC6W / AA-PB9NC5B / AA-PL9NC2B / AA-PL9NC6W / AA-PB9NC6W/E 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.)