RetiredChef

Go 48V and thank yourself in three years when you're not replacing burnt-out cables the size of your arm. Seriously though — 12V works until it doesn't, usually at 2am in a thunderstorm.

@ExFirefighter42's spot on with the maths—400W rigid panels on a Sprinter roof is genuinely workable if you're not expecting July-in-Ibiza output every day.