In one of my YouTube videos, I talk about how I’ve wired up my solar/battery system to ensure the energy in my home battery isn’t ever used to charge my car (which has a much bigger battery, so doing this doesn’t normally make sense), while still allowing the car to be charged using any excess solar power.
I had a query from somebody who was confused about how it worked, so I did my best to answer, and we went to and fro in what became a decent-length conversation. He has a similar inverter to me, but had some fundamental misunderstandings about how it worked.
At first, I assumed this was because he had different goals: he lives in another part of the world where there’s a lot more sun and a much less reliable electricity supply, for example. But no, it turned out he wanted to do the same thing as me, but was convinced it wouldn’t work the way I had described it.
It turned out, in the end, that the source of his confusion was that he had asked four different LLMs (ChatGPT, Claude, Perplexity, and Grok) about how to configure the system, and they had all agreed that ‘battery power is never used to power loads on the “Grid” port’, which is actually incorrect.
What persuaded him, in the end, that my description was right, and that all four LLMs were wrong?
He read the manual.
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