NinjaBatt Pro Battery for HP 807956-001 807957-001 HS04 807611-421 HS03 HSTNN-LB6U 15-AY039WM 15-AY009DX 15-AY061NR 15-BA009DX TPN-I119 15-AY041WM 255 G5 HSO4, Samsung Cells – [4 Cells/2600mAh]