Key Technical Specifications & Compatibility
Part Numbers (PN): 7FHHV, 99NF2, W7NKD, Type: 33YDH, 033YDH.
Capacity: 56 Wh; 3500mAh. 
Type: 4-Cell Lithium-Ion (Li-ion)
Voltage: 15.2V. 
Compatibility: 
1. Dell Inspiron: 15 (7577, 7570, 7573, 7586), 17 (7773, 7778, 7779, 7786), 14 (7486).
2. Dell G-Series: G3 3579, G3 3779, G5 5587, G7 7588.
3. Dell Latitude: 13 (3380), 3480, 3580, 3490, 3590, 3400.
4. Dell Vostro: 15 (7570, 7580).