The solar install was to include a battery, but it has taken months to arrive. Finally it is fixed to the wall - that is it for part 1, bolted to the wall.
It is Tesla Powerwall with 13½kWh usable storage, with 5kW charge/discharge rate.
Later this week Some time next week, it will be wired up, including a "gateway" to allow me to run off grid during power cuts.
Should be fun, watch this space.
But yes, planning to explain what it is, how much, what it does, how the wiring works, how it works with the solar panels, the app, the API, the tariff I end up, etc...