UBatteries Laptop Battery HP Pavilion dv6-6c50ca dv6-6c50us dv6-6c51ca dv6-6c53cl dv6-6c53nr dv6-6c54nr dv6-6c57nr dv6-6c73ca dv6t-3000 dv6t-3100 - 6600mAh, 9 Cell UBatteries Li-Ion Replacement Laptop Battery; Grade A Cell Type: 9 Cell Lithium-Ion | Voltage: 10.8V | Capacity: 6600mAh | Rating: 72Whr CE ROHS Certified One Year Warranty, 30 Days Return