Battery Model: 45N1762 Voltage: 10.8V Capacity: 4800mAh Li-ion Battery Compatible Part Numbers: 45N15E9 / 45N1758 / 45N1759 / 45N1760 / 45N1761 / 45N1762 / 45N1763 / 45N8961 / 45NE560 / 45NYU63 / 45R6758 / 4X50G53717 / 4X50G59217 Compatible with Lenovo ThinkPad (Edge) E550 E550c E555 E560 E565 Series CE-/FCC-/RoHS-Certified for safety.Strict guidelines for compatibility, and standards compliance for product safety and environment safety. 30 Days no-questions-asked full money back and 12 Months Exchange Guarantee. (The return window will be closed a month after you received the the product. CONTACT US, we will make it up and solve it more efficiently).