Here's a video of the West Mountain CBA testing one of my Bosch Fat Pack batteries. It's as easy as you can imagine. You first install the software on your PC. Then connect the CBA to your USB port. Finally, you plug in the test battery via it's Anderson Powerpole connectors to the CBA. There are adapters available for other types, but the APPs are standard.
Most of my packs did very well, some producing more than the expected 2.2AH. I need to analyse the data for all 14 packs.