SELLER SPECIFICATIONProduct Name: Compatible Battery for Dell 3521 / 5421 6C – Inspiron 15 3521, 17R 5721, Latitude 3440, Vostro 3445 Laptops (4000mAh, 6-Cell)Compatibility: Dell Inspiron 15 3521 Dell Inspiron 17R 5721 Dell Latitude 3440 Dell Vostro 3445 Battery Type: Rechargeable Lithium-ion batteryCondition: Brand new, 100% compatible, tested for quality and performanceVoltage: 11.1V / 11.4V (as per laptop specification)Capacity: 4000mAhNumber of Cells: 6-cell battery packWarranty: Standard seller/manufacturer warranty (specify duration if applicable)Features: High-capacity 4000mAh battery for extended laptop usage 6-cell design for stable and long-lasting power output Easy installation with a perfect fit for listed models Built with high-quality lithium-ion cells for durability Meets or exceeds OEM quality and safety standards Usage: Ideal replacement for old, weak, or damaged batteries in the listed Dell laptop models
