Key Specifications: Voltage: 11.1V Capacity: 46Wh | 4000mAh Battery Color: Black Battery Type: Lithium-ion (Li-ion) Cell Configuration: 3-Cell Compatibility: HP EliteBook 820 G1, 820 G2, 720 G1, 725 G1, 725 G2, 825 G2 Part Numbers: SB03XL, 717377-001, 717378-001, 716726-421, HSTNN-LB4T, HSTNN-IB4T, E7U25AA, E7U25UT