TechOrbits Laptop Battery for Dell Latitude E6320 E6330 E6430s E6220 E6230 Series - 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