Experience the premium power and reliable performance of our HP EL04XL battery, designed specifically for your HP Envy 4-1000 series notebook. This high-quality 52Wh battery is a perfect replacement or backup for your HP EL04XL Notebook battery, ensuring you stay powered up and productive at all times. Our EL04XL Battery has passed stringent CE FCC UL testing, providing you with assured safety and top-notch performance. This HP Envy Ultrabook 4 Battery, designed with advanced technology, enables fast charging allowing you to work and play without any power interruptions. Whether you are using an HP Envy 4-1015dx, 4-1016nr, 4-1115dx, or a 4-1215dx, this battery is compatible and delivers excellent performance. It is also a suitable fit for HP Envy Touchsmart Sleekbook 4-1105dx, ensuring your notebook runs smoothly and efficiently. As a seller, we care about the longevity and sustainability of your devices. That's why our EL04XL notebook battery can be reused for more than 500 cycles, making it a cost-effective and eco-friendly choice. The product package includes the HP 681949-001 battery, compatible with various HP models including HP Spare 681949-001, HP 681879-171, 681879-1C1, 681879-541, and 681949-001. Also compatible with HP Battery HSTNN-IB3R Envy 4, HSTNN-UB3R battery, HP Touchsmart laptop battery, and HP Touchsmart PC battery. We stand behind the quality of our products. If for any reason you are not satisfied with your purchase, we offer free return. Invest in our HP EL04XL battery to ensure your HP Envy, Touchsmart, Ultrabook, or Notebook continues to provide the performance you expect and deserve. Trust in our HP ENVY4 Battery for superior power, safety, and longevity.