Upgrade your HP laptop with this genuine HP WP03XL battery, designed for long-lasting power and reliability. This Li-ion Polymer battery delivers 51.3Wh capacity (4249mAh at 11.58V), ensuring extended usage for work, travel, and daily computing. 100% OEM-Compatible Direct replacement for HP part numbers: WP03XL, HSTNN-LB9C, HSTNN-LB8V, HSTNN-OB2J M73466-002, M73468-005, M64305-2C1, TPN-DB0P L78555-005, HSTNN-LB8W, M64304-421, M64304-422