Ombar 11.1V 62Wh New Laptop Battery for HP Pavilion DV4-5000 DV6-7000 DV7-7000 Envy DV4-5200 DV6-7200 671731-001 M6-1100 Series, MO06 MO09 H2L55AA HSTNN-LB3N HSTNN-LB3P TPN-P102 High-Capacity: 5200mAh 56Wh 10.8V, over 500 recharge cycles for battery life Operation time: Around 2.5 hours. depend on the amount of electricity required by the device and how you use it. Sungsum Grade A cell: A good battery cell can be stored and released energy steadily for a long time The perfect 1:1 size as original battery, perfectly fit for your laptop. Worry-free: 12-month warranty, 30 days' refund policy and friendly customer service