Customer ServiceRest assured with 30 days Refund and 12 months Warranty; Note: return windows will close after one month, dont worry about it, you can click on seller store on right corner ask a question and contact seller directly Basic DetailsItem Model: RJ40G; Battery Type: Li-ion; Voltage: 15.2V; Capacity: 63Wh/3941mAh; Battery Color: Black Compatible P/N RJ40G 01K2CF 075X16 0WK3F1 0M3KCN 005R42 Compatible Laptop ModelsFor Dell Latitude 14 5420 Series; For Dell Latitude 15 5520 Series; For Dell Precision 15 3560 Series; For Dell P137G P137G001 P104F P104F001 P104F002 Series NoteThe package includes: 1*battery and 1*Instructions. Before purchasing, please open the back cover of the laptop to confirm the battery model and shape