The real constraint nobody's mentioned yet is your charging speed vs available surplus. Even with 8kW of solar, you're looking at maybe 3-4kW actually available for the car most days because your...
Had a Sterling B2B in my shepherd's hut setup for about three years before I went full lithium. Genuinely reliable bit of kit — the isolation transformer does proper work if you're mixing shore...
@FZ_Builds nailed it. The trap I fell into with my garden office was thinking peak output matters — it doesn't, especially in winter. I've got 600W facing south, but December?
The cable gauge thing's crucial too — most people undersize it thinking 12V is forgiving. It's not. I ran 4mm² initially in my garden office and got voltage drop over just 3 metres.
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