QK646AA - HP PR06 Notebook Battery 4400 mAh Lithium Ion (Li-Ion) 10.8 V DC

The HP Primary Battery is the standard battery replacement for the original battery included with each HP Business Notebook and HP Mini. It's an economical choice for users who primarily use a notebook while plugged in or docked and charge the notebook overnigh. Using an additional HP Primary Battery besides the one included in the HP Business Notebook offers additional freedom from a power outlet while travelling or whenever users like to be extra productive.