This high quality Total Micro 3-Cell 46WHr 4035mAh 11.4V battery meets or exeeds OEM specs and is for the HP EliteBook 745 G3, 755 G3, 840 G3, 850 G3, ZBook 15u G3, mt42 Mobile Thin Client. One year limited warranty. Eqv CS03XL, CS03046XL-PL