Laptop Batteries C21N1634 for ASUS VivoBook R542U

Replace Part Numbers:
C21N1634 2ICP4/59/134

Compatible Laptop Models:
For ASUS VivoBook R542U  R542UR  X542U  FL5900L FL8000L Series

For ASUS VivoBook 15 A580U X580U  X580B 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.