SpecificationsBattery Voltage: 11.1V. Capacity: 58Wh. Cells: 6-Cells. Battery life: Up to 500 recharge cycles over the life of the battery. Compatible Part Number451-BBJB, 451-BBIY, 451-BBIZ 7WV3V, H4PJP, JR6XC, YFDF9, YFOF9, 5MTD8 Compatible the Modelsfor Dell Latitude 3340 Series, Dell V131 2nd generation Series, Battery type 451-BBJB, 451-BBIY, 451-BBIZ 7WV3V, H4PJP, JR6XC, YFDF9, YFOF9, 5MTD8. Quality Assurance100% new from manufacturer, every battery has passed factory testing, grade A cells ensure fast charges and low power consumption, built-in circuit protection ensures both safety and stability, guarantee your piece of mind while using the battery or storing it. Perfect Customer Service24 x 7 email support. Your satisfaction is extremely important to us. If you have any doubts, please feel free to contact with us,Professional and friendly customer service will be provied for you.