Hp SPECTRE X360 13-AP SP04XL HSTNN-IB8R L28538-1C1 laptop battery -  Compatible Part Numbers: HSTNN-IB8R, HSTNN-OB1B, L28538-1C1, L28538-AC1, L28764-005, SP04061XL, SP04XL, TPN-Q185, TPN-Q203, TPN-Q204 - Battery Type: Li-ion, Battery Volt: 15.4V, Capacity