Battery type: Li-ion;
Voltage: 15.2V;
Capacity: 63Wh/3941mAh;
Cells: 4-cell ^^
Compatible Models: Fit for Dell Latitude 14 5420 Series, Fit for Dell Latitude 15 5520 Series, Fit for Dell Precision 15 3560 Series, Fit for Dell P137G P137G001 P104F P104F001 P104F002 ^^ Replace
Part Numbers: RJ40G 1K2CF 75X16 WK3F1 M3KCN 01K2CF 075X16 WY9DX 0WK3F1 0M3KCN 005R42 RJ4OG 4ICP5/57/79 ^^
Noted: There are 2 battery (RJ40G 63Wh and WY9DX 42Wh) of the Latitude 5420 5520 laptop, please choose the which one you are going to replace and according to your laptop's original battery ^^ 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. The actual operation time will depend on how much electricity is required by the device and how you use it ^^ For first use, please discharge the battery to 5%(not to 0%) and then charge to 95%, and cycle 3-4 times