Compatible Models (use "Ctrl+F to find your model quickly")
For Dell Latitude 14 5420 series
Dell Latitude 14 5420 CHKFM
Dell Latitude 14 5420 FDTCY
Dell Latitude 14 5420 XPC5H.
For Dell Latitude 15 5520 series
Dell Latitude 15 5520 39V1H
Dell Latitude 15 5520 FPKNM.
For Dell Precision 15 3560 series
Dell Precision 15 3560 3H45Y
Dell Precision 15 3560 4MTF7
Dell Precision 15 3560 758J7
Dell Precision 15 3560 7RV10
Dell Precision 15 3560 F3T9T.
For Dell P137G P137G001 ,
Dell P104F P104F001 P104F002.
Replacement Part Number:
RJ40G / 01K2CF / 075X16 / WY9DX / 0WK3F1 / 0M3KCN / 005R42
Install A New Battery:
1. You need to turn off your laptop and disconnect the power.
2. Remove the old battery, carefully install the new battery on the battery case, and connect the wiring of the new battery.
3. If you don't understand the above steps, you can search for the video about laptop battery installation on YouTube. Maybe it will help you.
Laptop Maintenance Tips:
1. New battery: For use a new battery, youd better try a few cycles of discharging to 5%. then charging up to 95%. So that it can be activated completely
2. Overuse: Do not always run out of a battery to 0%, this would make it damaged or usage life shortened
3. Charging sequence: when charging, first install the battery, then turn on the power, when fully charged, first cut off the power, then pull the power plug.
4. Long-term storage:Please store the unused battery fully charged.(Charge it once a month) Do not store at low power to prevent reduce the lifespan of a battery
5. Charger: Do not replace the laptop adapter casually. If the original adapter cannot be applied due to malfunction or damage, please replace the models, so as not to reduce the service life of the battery due to incompatibility.
Overload protection
Over-current protection
Over-voltage protection
High voltage protection
Short circuit protection
Over-temperature protection