Kastar New Laptop Battery (1-Pack) for Dell Inspiron 13R (N3010) 14R (N4010) 14R (N4110) 15R (N5010) 17R (N7010) M5110 M4110 M501 M503 Series, Vostro 3450 3550 3550n 3750, Fits P/N J1KND 312-0234 383CW YXVK2 W7H3N J4XDH 9TCXN - [with Samsung Li-ion 6-cell 11.1V / 5200mAh 58Wh] Kastar Brand Replacement Lithium-ion (Li-ion) Battery use High Quality Original Samsung Li-ion 6 Cells; Long Lasting and Manufacture Price. Kastar Battery 100% decoded and 100% Compatible with Original Dell Battery, up to 500 recharge cycles over the life of the battery. Long Lasting for longer battery life and Cools the battery by forcing cool air through the battery's built-in air vents. Use Integrated Japanese microchip which can control current, voltage & temperature to maximize battery life. Include 30-Day Money Back and 18-Month Manufacturer Warranty. (Need more Quantity and More promotion please search Kastar other listings on Amazon)