Original Quality Laptop Battery P104F RJ40G WY9DX for DELL Latitude 14 5420 series

Replace Part Numbers
WY9DX
RJ40G
01K2CF
075X16
0WK3F1
0M3KCN
005R42

Important Note:
WY9DX(11.4V 42WH 3Cell)
RJ40G(15.2V 63WH 6Cell)

This 2 model of battery cannot compatible and replaced with each other
Please choose the right model and capacity according to your laptop’s original battery

Compatible Laptop Models
For Dell Latitude 14 5420 series
For Dell Latitude 14 5420 CHKFM
For Dell Latitude 14 5420 FDTCY
For Dell Latitude 14 5420 XPC5H
For Dell Latitude 15 5520 series
For Dell Latitude 15 5520 39V1H
For Dell Latitude 15 5520 FPKNM
For Dell Precision 15 3560 series
P137G P137G001 P104F P104F001 P104F002
For Dell Precision 15 3560 3H45Y
For Dell Precision 15 3560 4MTF7
For Dell Precision 15 3560 758J7
For Dell Precision 15 3560 7RV10
For Dell Precision 15 3560 F3T9T
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.