45N1742 45N1740 45N1741 45N1743 00NY639 Laptop Battery Replacement for Lenovo ThinkPad T550 T550s T560 W550 W550s P50S Type 20CK 20CJ 20FH 20FJ 20E2 Series SB10K12721 3ICP/7/61/70 3ICP7/62/66

[Specifications] Model: 45N1742 // Battery type: Li-ion // Voltage: 11.4V // Capacity: 44Wh/3900mAh // 100% New from Manufacturer. Top circuit boards and smart chip
[Compatible Part Number] Fit for 00NY639 / 45N1740 / 45N1741 / 45N1742 / 45N1743 / SB10K12721
[Compatible with Laptop Models] Fit for Lenovo ThinkPad T550 Series; Fit for Lenovo ThinkPad T550s Series; Fit for Lenovo ThinkPad W550 Series; Fit for Lenovo ThinkPad W550s Series
[After Service] Return and exchange are permitted within 30 days, accompanied by a 12-month warranty. (NOTE: If you encounter any issues with the battery, please reach out to usunder "YOUR ORDER," select the "contact seller" option.)
[Gentle Reminder] If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10% (not 0%), then charge and cycle 3-4 times to wake up the new battery
[Safety Features] Please refer to the instructions before you installing the battery. All EFOHANA products are Certified by CE for safety, strictly test ensure both safety and stability