Coolgo New Laptop Battery for Battery for Lenovo 3000 G430M G450 G455A G530 N500 G550 B460 B550 L08L6Y02 42T4729 Battery for Lenovo 3000 G430M G450 G455A G530 N500 G550 B460 B550 L08L6Y02 42T4729 High-Quality: Our battery choose high quality and new lithium-ion cells, safe and reliable, stable performance which can charge-discharge more than 500-800 cycles. 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.)