Using nPM Fuel Gauge board for battery capacity testing?

[aacosta]

Hi,

Is there a way to use the nPM Fuel Gauge board for battery capacity testing? I would like to evaluate/confirm the actual capacity of the batteries I buy.

The Power Up tool doesn't seem to provide a way to do this through profiling. Maybe I can infer this information from the raw profile files? If so, is the format of the files document somwhere?

[aacosta]

That's great! I wanted to confirm before buying the kit and the youtube videos didn't show it. Is it possible to see the discharge curve of the battery?

[ketiljo]

You can plot the discharge measurement data recorded during the profiling process, which is used to create the battery model.

A CSV file is available for each temperature and is saved in the project folder you select. It contains all the discharge data, including: Time, Current (A), Voltage (V), and Temperature (°C). This can be used to plot the curve in Excel for instance.