Most Texas Instruments battery fuel gauge products support authentication for anti-counterfeit protection of battery packs. This application note describes the process of creating a SHA or ECC key using BQKEYPACKAGER, programming the selected key onto a gauge using BQKEYPROGRAMMER, as well as guidance on programming the key in a production environment.

The purpose of these two tools being standalone is to allow an OEM to encrypt authentication keys in a file and send to a packmaker. The packmaker can then use this file as the data source for BQKEYPROGRAMMER to program the key onto a gauge. This way the key is not visible to the packmaker.

• BQKEYPACKAGER
• BQKEYPROGRAMMER
• BQSTUDIO