Laptop Battery 45N1742 for Lenovo ThinkPad T550 Series

Replace Part Numbers:
45N1740? 45N1741? 45N1742

45N1743? 00NY639? SB10K12721

Compatible Laptop Models:
For Lenovo ThinkPad T550 Series
For Lenovo ThinkPad T550s Series
For Lenovo ThinkPad W550 Series
For Lenovo ThinkPad W550s Series
Installation and usage instructions:

1. Before replacing the battery, be sure to turn off the power first and then remove the charger plug. Replacing the battery during the startup process may pose a safety hazard.
2.After removing the original battery, press the power button continuously for 10 seconds without releasing it. Release the remaining power and static electricity on the motherboard before replacing the new battery.
3. Before installing a new batter
y, confirm the positive and negative poles of the battery, especially the built-in battery, and be careful not to plug it in incorrectly.

Regarding Capacity:

Lithium batteries are consumables, and it is normal for their capacity to fluctuate by around+5% due to factors such as inventory time and usage environment.