Laptop Battery B31N1424 for ASUS U4000 K401U K401UB

Laptop Battery Replacement Part Number:
B31N1424

Compatible Laptop Models:
For ASUS U4000 K401U K401UB A400U A401L K401L K401LB K401LB5010 K401LB5200 K401LB5500 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.