About this item
Battery type: Li-ion; Capacity: 4400mAh; Cells: 6-cell; Voltage: 11.1V. 
Compatible With Models: Dell E5420 E5430 E5520 E5530 E6420 E6430 E6520 E6530 E6440 E6540 Inspiron 4420 5420 5425 4520 5520 5525 7420 7520 4720 5720 M421R M521R N4420 N4520 N4720 N5420 N5720 N7420 Vostro 3460 3560. Compatible with Part Numbers: 04NW9 2P2MJ 312-1163 312-1164 312-1242 312-1323 312-1324 312-1325 8858X CWVXW DHT0W HCJWT KJ321 M1Y7N M5Y0X NHXVW P8TC7 P9TJ0 PRRRF RU485 T54F3 T54FJ UJ499 YKF0M X57F1 911md N3X1D 71r31 
All DTK products are Certified by CE, FCC for safety. Strict guidelines for compatibility, and standards compliance for environment safety. 
Safety:Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. 
Operation time for standard batteries(6-cell, 4400mah): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.
 
Compatible Models
Dell
Latitude E5420 Series, Latitude E5420 N-Series
Latitude E5430 Series
Latitude E5520 Series, Latitude E5520 BRC 6 Series, Latitude E5520 N-Series, Latitude E5520m Series, Latitude E5530 Series,
Latitude E6420 Series, Latitude E6420 N-Series, DELL Latitude E6420 ATG Series , DELL Latitude E6420 XFR Series
Latitude E6430 Series, Latitude E6430 ATG Series, DELL Latitude E6430 XFR Series
Latitude E6520 Series, Latitude E6520 N-Series
Latitude E6530 Series,
 
DELL A4 A5 S5 series
 
Inspiron
14R Series 4420 5420 5425 7420 SE TURBO ; 15R Series 4520 5520 5525 7520 15R-SE-4520 15R-SE-5520 15R-SE-7520 15R-SE 15R TURBO ; 17R Series 4720 5720 17R-SE 17R-SE-4720 17R-SE-5720 17R-SE-7720 17R TURBO 4420 Series
Inspiron
4520 Series 4720 Series 5420 Series 5425 Series 5520 Series 5525 Series 5720 Series 7420 Series 7520 Series M421R Series M521R Series N4420 Series N4520 Series N4720 Series N5420 Series N5520 Series N5720 Series N7420 Series N7520 Series
Vostro 3460 Series Vostro 3560 Series