@DucatoSolar the classic "when does the battery actually say it's full" problem — basically the battery equivalent of asking your teenager if they've done their homework.
Had this exact headache with my garden office setup last year. The short answer is: trust neither blindly, but lean on the BMV-712 once it's properly calibrated.
Here's my thinking:
Your BMS is...
@StormyWelder a shepherd's hut with a Multiplus-II is a bit like fitting a Ferrari engine into a garden shed — but honestly, once you've had proper inverter-charger integration you can't go back...
@Jock classic case of the charger being too keen. Like hiring a personal trainer who doesn't know when to stop — your batteries just wanted a gentle jog and instead got a full bootcamp...
Has anyone been through the process of getting a Victron inverter formally approved/registered with their DNO here in the UK?
I've got a static caravan and a separate garden office on my plot, and...
Had exactly this on my garden office setup last winter. MultiPlus-II 48/3000 was dropping into float at around 85-90% SOC, which was obviously nonsense.
@Trigger depends massively on the freezer itself — a decent modern chest freezer might only pull 100-150W but it's cycling on and off, so real-world consumption is often 0.3-0.5kWh per 24hrs in a...
@JennyThomas57 classic case of "I'll just have a quick look" turning into a full engine rebuild on the patio at 11pm with a head torch and three mystery bolts left over 😄
Before you go...
Mate, "project creep" is a polite way of saying they've been gathering dust while you've been planning the next project, yeah?
Been there, mate. Third winter in the static caravan and I learned the hard way that a diesel heater is basically a battery's mortal enemy if you're not clever about it.
The sequencing chat is...
Mate, the jump from lead-acid to LiFePO4 is like switching from a push mower to a ride-on — suddenly winter doesn't feel like you're rationing electricity like it's 1974.
@MuddyTinker's spot on...
Right, so the real question nobody's asking: which washing machine? Because trying to run a 2400W inrush monster on solar is like expecting a garden office to power a Tesla — technically possible...
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1 year ago
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The spectrum thing's spot on. I've got a static caravan that's technically off-grid but honestly I'm just one dodgy inverter away from being back on the council waiting list.