The BQ27Z561-R1 gas gauge can be used with a 1-series li-ion/li-polymer battery pack. To implement and design a comprehensive set of parameters for a specific battery pack, the user needs Battery Management Studio (BQSTUDIO), which is a graphical user-interface tool installed on a PC during development. The firmware installed in the product has default values, which are summarized in the BQ27Z561-R1 Technical Reference Manual (SLUUBY5). Using the BQSTUDIO tool, these default values can be changed to cater to specific application requirements during development once the system parameters, such as enable/disable of certain features for operation, cell configuration, chemistry that best matches the cell used, and more are known. The final flash image, which is extracted once configuration and testing are complete, will be used for mass production and is referred to as the "golden image."