Replacement laptop battery for HP laptops & notebooks, models include ProBook and ENVY. This is an OEM replacement for HP part numbers including VI04, 756743-001, 756745-001, 756744-001, 756478-851. See the specs tab for detailed HP laptop compatibility. This 2,800 mAh Lithium-Ion battery is rated at 14.4V 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.