PG03XL 65Wh (Shape B) Premium Replacement Battery for HP Spectre x360 15-AP000 Series CRITICAL COMPATIBILITY NOTICE: There are TWO different PG03XL batteries: 52.5Wh Shape A (for Pavilion Gaming) and 65Wh Shape B (for Spectre x360). They are NOT interchangeable. This listing is for the 65Wh Shape B version specifically for HP Spectre x360 models. Power your premium HP Spectre x360 convertible with this high-performance 65Wh Li-ion replacement battery. Designed specifically for Spectre x360 15-inch models, this battery delivers extended runtime for creative work, productivity, and versatile 2-in-1 computing.