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V79YO is a genuine or compatible lithium-ion (Li-ion) battery that serves as a direct replacement for the original battery in several Dell XPS laptop models. As an internal battery, its installation requires opening the laptop case. It is designed to provide reliable, long-lasting power, meeting or exceeding OEM specifications to ensure safety and performance. The battery features built-in circuit protection to prevent common issues like overcharging, over-discharging, and short-circuits.DetailsPart Numbers: The primary part number is V79YO (or V79Y0). Other compatible part numbers include YMYF6, 0YMYF6, and ORMTVY.Chemistry: Lithium-ion (Li-ion) or Lithium-polymer (Li-polymer)Voltage: 14.8V (some sources may mention 14.4V, which is compatible and in common use).Watt-hour (Wh) Capacity: 58Wh. This is a crucial specification to match for compatibility.Milliampere-hour (mAh) Capacity: The mAh capacity varies slightly between sources, with common values being 3760 mAh, 3800 mAh, and 4400 mAh.Number of Cells: Typically an 8-cell battery. Some sources also mention a 6-cell variant, but the 8-cell is the more common one for the 58Wh capacity.Color: Black.