HP Spectre X360 13-AP Series 15.4V 3990mAh 61.4Wh 4-Cell 4ICP5/64/85 Li-Ion Rechargeable Laptop Battery L28764-005.
Battery Voltage: 15.4V
Battery Watt-Hour (Wh): 61.4Wh
Battery Capacity (mAh/Ah): 3990mAh
Battery Number of Cells: 4
Battery Type: 4ICP5/64/85, Li-Ion
Color: Black
Type: Laptop Battery