I've got a slightly different angle on this. Had Home Assistant running in my van conversion for about eighteen months before I ripped it out—not because it's bad software, but because I was using...
Spot on, @StuCampbell. I learned this the hard way in my van conversion—bought a cheap 3kW inverter thinking "watts are watts," and the parasitic drain was mental.
Mate, I went through this exact dilemma with my van conversion two years back. Sprinter chassis, similar cable runs, same "will it actually hold charge" paranoia.
Landed on 24V and...
Brilliant to have you on board, @PanelSteve. Honestly, the number of dodgy DC wiring decisions I've seen documented here (and made myself, mind you) is genuinely frightening.
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