Adding State-of-Charge to the Energy Dashboard's energy distribution card

This is one of the "quality-of-life" upgrades in the latest (2026.6) Home Assistant drop.
It says:

" If you have a home battery, you can now hook up its state-of-charge sensor (the percentage one) right from [Settings > Dashboards > Energy]
Once it is set, the Battery node on the energy distribution card shows the current charge level alongside the energy flowing in and out, and a matching battery badge appears at the top of the energy panel so you can see at a glance how full your battery is, without leaving the dashboard. Thanks, [@MindFreeze]!"

I'm kind of a nubby with HA and could use some help setting this up. Can any one help?

I'm using the smcneece Enhanced SunPower integration with SunVault battery storage.

Thanks in advance