Replacement Laptop Battery, 15.2V

This genuine OEM replacement battery is engineered to restore full power capacity to Dell Latitude 5521 laptops and compatible business-class systems. Built on proven lithium-ion technology, this 4-cell unit delivers 64Wh of reliable energy at 15.2V nominal output, providing 5 to 8 hours of typical runtime under standard operating conditions. The robust construction weighs approximately 1.55 lbs and integrates seamlessly with Dell's power management systems for optimal performance and longevity. Designed for professionals requiring dependable mobile computing, this battery maintains consistent charge cycles and supports the demanding workflows of business users, engineers, and mobile workforce environments. The Li-Ion chemistry offers superior energy density compared to older battery technologies, minimizing weight while maximizing productivity during extended work sessions away from AC power sources. This replacement part is compatible with the Dell Latitude 5521 and related Latitude models including 5421, 5431, and 5531, as well as Dell Precision mobile workstations including 3561, 3571, 3581, and 3470. Cross-reference part numbers include GRT01, 0GRT01, R05P0, 0P3TJ, and VXD57 for verification and procurement purposes. This battery ensures your Dell mobile systems maintain the performance and reliability expected in professional computing environments.