TechOrbits Laptop Battery for HP Pavilion DV4-1000 DV4-2000 DV5-1000 DV6-1000 DV6-2000 CQ50 CQ60 CQ70 G50 G60 G60T G61 G70 G71 Fits P/N 484170-001 EV06 KS524AA KS526AA HSTNN-IB72-3 Years Warranty Battery type: Li-ion; Capacity: 4400mAh; Cells: 6-cell; Voltage: 11.1V. 100% New from Manufacturer; Up to 500 recharge cycles over the life of the battery; TechOrbits is the only laptop battery brand to offer a 3 year warranty CE-/FCC-/RoHS-Certified for safety; 2 hour email response time 24/7; the friendliest support on the planet Texas Instruments main board inside for fast charging;double overcircuit protection for extra safety Operation time: standard 4400mAh batteries provide about 2 hours of operation time; the actual operation time will depend on hardware/software being run as well as power management settings and the laptops energy efficiency