CWK High Performance Battery for HP Pavilion DV7-1129WM Laptop Battery [14.4V 8cells 5200mAh (4400mAh compatible)] Battery Laptop Notebook Computer PC with 24 Months warranty Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 14.4 Volt (14.8 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!