Replacement laptop battery for Dell laptops & notebooks, models include Latitude E5420, E6420, 5430, 6420. This 5,200 mAh Lithium-Ion battery is rated at 11.1V and has an average run time of Up to 5.0 Hours. The longevity rating is 300-500 Cycles and it comes with a 1 year warranty. Micro Center offers HP laptop battery replacement and installation services to ensure your laptop will be back up and running quickly ask the store for details. This is an OEM replacement for Dell part numbers including DHT0W, 312-1324, T54FJ. See the specs tab for detailed Dell laptop compatibility.