Compatible Brand For HP Model No HP ELITE BOOK 840 CM03XL Number Of Cells 6 Capacity 4000 mAh Compatible Models EliteBook 740 Series, EliteBook 740 G1 Series, EliteBook 740 G2 Series, EliteBook 745 Series, EliteBook 745 G1 Series, EliteBook 745 G2 Series, EliteBook 750 Series, EliteBook 750 G1 Series, EliteBook 750 G2 Series, EliteBook 755 Series, EliteBook 755 G1 Series, EliteBook 755 G2 Series, EliteBook 840 G1, EliteBook 840 G1 Series, EliteBook 840 G2 Series, EliteBook 845 Series, EliteBook 845 G1 Series, EliteBook 845 G2 Series, EliteBook 850 Series, EliteBook 850 G1 Series, EliteBook 850 G2 Series, EliteBook 855 Series, EliteBook 855 G1 Series, EliteBook 855 G2 Series, ZBook 14, ZBook 14 Series, ZBook 14 G2 Series, ZBook 15u Series, E7U24AA Mobile Workstation Compatible Parts No 716723-271, 716724-1C1, 716724-421, 717376-001, CM03, CM03050XL, CM03XL, HSTNN-DB4Q, HSTNN-IB4R, HSTNN-L11C-5, HSTNN-LB4R Warranty 6 Month from Service Center