Is your HP laptop not holding a charge anymore? This replacement battery could be the fix! It's designed as a direct substitute for certain HP Envy, 15, 15g, and 15q models. It matches batteries with part numbers like HS03031, HS03031-CL, HS04, HS04041, and others listed in the title. Key specs: it's a 4-cell Lithium-Ion battery with a 14.8 Volt output and 2200mAh capacity. It comes brand new in its packaging, ready to bring your laptop back to life with hours of cord-free use. Please, please check your old battery's model number, voltage, and capacity before buying to make sure this is the right one for your specific HP laptop. A quick tip: batteries have chemicals inside, so there's a California Prop 65 warning. Installing a new battery is usually a simple DIY task. Don't be tethered to the wall outlet – get your mobility back!