Replacement Battery for Dell Latitude and Precision Business Series Restore your Dell Latitude 5400, 5410, 5500, 5510 or Precision 3540, 3550 to optimal performance with this premium 42Wh Li-ion replacement battery. Specifically engineered for Dell's business laptop series, this 451-BCLI compatible battery delivers reliable power for professional use with stable 11.4V output and efficient 3500mAh capacity. Perfect for business professionals requiring dependable performance.