LB1 High Performance New Laptop Battery for HP hstnn-c51c Notebook HP hstnn-c51c for Computer HP hstnn-c51c [5200mAh 6 Cells 10.8V] Battery Type: Li-Ion; Capacity: 5200 mAh/57Wh; Cells: 6; Voltage: 10.8V Premium Grade A cells ensures peak performance and reliability. Operation time depends on the capacity of the battery, laptop settings, power consumption of equipment, and how you use it. CE-/RoHS-/FCC- Certified and Built-in circuit protection ensure both safety and stability. Live Support Mon-Fri 4am-8pm PST | Sat-Sun 8am-5pm PST | 18 Months Hassle-Free Warranty. Battery for HP hstnn-c51c