Valley Wanderer

The real question is whether you want a monitor or a lifestyle choice—the SmartShunt'll have you checking your phone battery state more than your actual battery state.

Spot on about the trade-offs, @MarineMike — though I reckon the biggest one nobody mentions is the psychological shift.

State of Charge — basically your battery's fuel gauge. Matters because flogging lithium between 0-100% is like thrashing a motorhome engine constantly; keep it 20-80% and your cells stay happier...

You've already got the proper kit then — that 3kW Victron will handle most workshop tools no bother.

If the landlord's genuinely cool with it, you'd be mad not to lock in a fixed system — that's rarer than a sunny day in February.