LB1 High Performance Battery for HP Pavilion DV4-1280US, Part #: 511872-001, 462889-121, 462889-421, 462890-762, HSTNN-W51C Laptop Notebook Computer PC [4400mAh 10.8V 6Cells] LB1 High Performance&reg; battery for HP Pavilion DV4-1280US, Part #: 511872-001, 462889-121, 462889-421, 462890-762, HSTNN-W51C are environmentally friendly and certified by RoHS to be free from mercury - lead - cadmium - PBDE and PBBs. LB1 High Performance&reg; Commercial Grade Laptop Batteries for HP Pavilion DV4-1280US, Part #: 511872-001, 462889-121, 462889-421, 462890-762, HSTNN-W51C are custom manufactured to be 100% compatible and optimized for your HP Pavilion DV4-1280US, Part #: 511872-001, 462889-121, 462889-421, 462890-762, HSTNN-W51C laptop HP Pavilion DV4-1280US, Part #: 511872-001, 462889-121, 462889-421, 462890-762, HSTNN-W51C High Performance notebook battery utilizes high quality grade "A" cells for higher performance longer life and more reliability. HP Pavilion DV4-1280US, Part #: 511872-001, 462889-121, 462889-421, 462890-762, HSTNN-W51C High Performance meets and/or exceed OEM specification and will not void your original manufacturer warranty. Batteries capacity: 4400 mAh | Chemistry: Li-ion | Cells: 6 | Voltage: 10.8 Volts | wHr: 48. Fast charging. Low power consumption. Built-in protection circuit ensures both safety and stability. 100% Customer Satisfaction.Fast Same-Day Shipping by 18:00 PM PDT.30-Day Money Back Guarantee. 18 Months Warranty. Exclusive $100000 Product Protection Plan! Satisfies Government - School - Health care enterprise and Corporate account purchase order requirements.