T54FJ M5Y0X 8858X Laptop Battery for Dell Latitude E6420 E6520 E6530 E5420 E5520 E5430 E5530 Inspiron 17r-7720 17r-se-7720 17r-5720 15r-5520 15r-7520 P/N: T54F3 P8TC7 P9TJ0 R48V X57F1 M421R M521R

Compatible part numbers:

8858X T54F3 T54FJ M5Y0X NHXVW 04NW9 2P2MJ 911MD CWVXW DHT0W HCJWT 8P3YX 0T54FJ X57F1 P15F P15G P16G M1Y7N P8TC7 P9TJ0 PRRRF RU485 UJ499 YKF0M R48V3 312-1163 312-1164 312-1242 312-1324 312-1325 312-1311 N3X1D 71R31 312-1310 451-11947 312-1165 312-1323 PRV1Y

Compatible Laptop Models: (Use"Ctrl+ F" Find your Model)

Dell Latitude E6520 E6530 E6540 Series

Dell Latitude E6420 E6430 E6440 Series

Dell Latitude E6420 E6430 ATG Series

Dell Latitude E6420 E6430 XFR Series

Dell Latitude E5420 E5430 E5520 E5530 Series

Dell Latitude E5420 E5520 N-series

Dell Inspiron 14R 14R-SE Series Battery

14R-4420 14R-5420 14R-5425 14R-7420

14R-SE-4420 14R-SE-5420 14R-SE-7420

Dell Inspiron 15R 15R-SE Series Battery

15R-4520 15R-5520 15R-5525 15R-7520

15R-SE-4520 15R-SE-5520 15R-SE-7520 15R Turbo

Dell Inspiron 17R 17R-SE Series Battery

17R-4720 17R-5720 17R-7720

17R-SE-4720 17R-SE-5720 17R-SE-7720 17R Turbo

Dell Vostro 3460 3560 Battery

Delll Precision M2800 Battery

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, you’d 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.