any description of the generic battery design?

I am looking at power_battery_aging.slx. The generic battery under the mask shows a enormously complex picture for charging and discharging functions. I can't find explanation for all the different variables used in the functions. This page https://www.mathworks.com/help/physmod/sps/powersys/ref/battery.html does not seem to be the right document for it either. Is there some document somewhere for me to figure this out?

[Jonas]

What is this "power_battery_aging.slx" model you are looking at? Is it a MathWorks example available in the documentation?

Every block in Simulink has a documentation page you can access by right clicking the block, and clicking Help.