3521 BATTERY For Dell Inspiron 3521 14 3421 / 14r 5421 / 14r-(3437 5437 N3421 N5421) 15 3521 / 15r-(3537 5537 N3521 N5521 N5537) / 17 3721 / 17r-(5737 N3721 N3737 N5721 N5737) 17r 5721 / 15r 5521 MR90Y

• Compatible Part Number: XCMRD 0MF69 451-12107 6HY59 9K1VP MR90Y VR7HM 24DRM 451-12108 6K73M DJ9W6 N121Y W6XNM 312-1387 49VTP 6KP1N FW1MN PVJ7J X29KD 312-1390 4DMNG 6XH00 G019Y T1G4M 312-1392 4WY7C 8RT13 G35K4 V1YJ7 XRDW2 312-1433 68DTP 8TT5W MK1R0 V8VNT YGMTN 451-12097 451-12104

• Fit laptop models: For Dell Inspiron 14 15 17 3000 series; Latitude 3440 3540 E3440 E3540 series, Vostro 2421 2521 series P37G P28F P17E P40F laptop mode

Compatible with Laptop Models: (Kindly note: click "Ctrl+F" to search the model of your laptop)

• For Inspiron 14 Series: 14 3421 - 14 3437 - 14 3442 - 14 N3421 - 14 N3437
• For Inspiron 14R Series: 14R 5421 - 14R 5437 - 14R N5421 - 14R N5437
• For Inspiron 15 Series: 15 3521 - 15 3531 - 15 3537 - 15 3541 - 15 3542 - 15 3543 - 15 5521 - 15 5535 - 15 5735- 15 N3521 - 15 N3537
• For Inspiron 15R Series: 15R 3521 - 15R 5521 - 15R 5537 - 15R N3521 - 15R N5521 - 15R N5537
• For Inspiron 17 Series: 17 3721 - 17 3737 - 17 5721 - 17 5748 - 17 N3721 - 17 N3737 - 17 N5721
• For Inspiron 17R Series: 17R 3721 - 17R 5721 - 17R 5737 - 17R 5749 - 17R N3721 - 17R N5721 - 17R N5737
• For Latitude Series 3440 - 3540
• For Vostro Series 2421 - 2521

Compatible with Part Number :

0MF69 49VTP 68DTP 6KP1N 8TT5W FW1MN MK1R0 PVJ7J V8VNT X29KD YGMTN 24DRM 4DMNG 6HY59 6XH00 312-1390 312-1392 9K1VP G019Y MR90Y T1G4M VR7HM XCMRD 4WY7C 6K73M 8RT13 DJ9W6 G35K4 N121Y V1YJ7 W6XNM XRDW2 312-1387 312-1433 451-12107 451-12108

Compatible laptop models：

Installing  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.

For Laptop Maintenance:

1. Fully Activation: First use the 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 to 0% is Not Recommended: Frequently Running out of a battery to 0% would make it damaged or usage life shortened.

3. 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. Please store the unused battery fully charged.(Charge it once a month) Low battery storage will lead to a shorter battery life.