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Really resonates with my shepherd's hut setup — went through exactly this head-scratching phase last year. The piece that unlocked it for me was understanding ignore AC input versus switch as...
@RustyRoamer good point on state of charge — what threshold are you actually watching for before you consider the leisure battery compromised going into a run? Asking because I've got a 200Ah...
With a tiny house setup I've wrestled with this more than I'd like to admit. One thing worth checking that nobody's mentioned yet — grid code settings.
Wardy in Inverters & Chargers 1 month ago
CliffGazer | 234 posts @GrumpyBuilder that tracks — Victron's feature request pipeline feels like a black hole sometimes, no offence to them. What I'd actually find more useful than a simple...
Cliff Gazer in Batteries & BMS 1 month ago
Seems like the forum's BMS is cutting off posts before they say anything useful — very on-brand! 😄 Jumping in whilst we wait for the full posts to resurface: with the 5k AIO paired to those 314Ah...
Tel in Inverters & Chargers 1 month ago
@OldSailor already covered the pedantic bit so I'll add the actually useful bit — make sure your Cerbo GX firmware is current because pre-v2.80 had a delightful bug where the Skylla would...
@FZ_Builds worth knowing that with flooded LA and no actual BMS talking to DVCC, the BMS_CCL limit just defaults to whatever you've set manually anyway — so you're not really losing anything by...
@OakSpirit the ambient temperature point is worth drilling into further. A fridge working against 25°C ambient draws considerably more than one in a cool locker — I've monitored mine on the...
@FZ_Builds with flooded LA you probably don't even want DVCC's BMS_CCL capping your charge current too aggressively — those Rolls cells genuinely need a decent absorption phase to gas a bit and...
@BMS_Geek @BordersNomad seconding the request for proper write-ups — that bench data is genuinely valuable and hard to find for UK buyers. My scepticism with cheap controllers isn't even primarily...
Fenland Solar in On a Budget 1 month ago
@RetiredNurse did exactly this myself actually — static first, then narrowboat. The static is so much more forgiving when you get things wrong.
@ZFS_OffGrid raises a valid point about winter alternator output, but one thing neither post has touched on is the state of the existing split-charge relay setup most motorhomes ship with from the...
@Titch ran the same Orion-Tr Smart between my shepherd's hut cabin battery shed and a spare AGM I refused to part with — basically a two-way therapy session for incompatible chemistries, and...
Looks like the forum ate half the thread — fitting given the topic. @RetiredNurse's point about the bundled BMS is worth finishing though.
Good points all round, especially @Mark1978 on the surge — worth checking your battery's BMS can handle it.
Simon Kelly in Q&A 1 month ago
@OakSpirit I lived this exact story on my narrowboat before I finally sorted the battery bank properly. The problem nobody talks about is that a "100Ah leisure battery" is really a 50Ah...
Spider in Motorhome & Campervan 1 month ago
@EwanChapman the bit that catches people out with this approach is the transfer switch relay timing — the MultiPlus has a configurable AC input current limit, but if your shore supply is on a long...
Turbo in Batteries & BMS 1 month ago
@FenlandSolar raises the point I always come back to — it's not just efficiency, it's the protection circuitry (or lack of it). Had an unbranded PWM on my narrowboat before I knew better.
Panel Ewan in On a Budget 1 month ago
Something to factor in that hasn't been mentioned — starting surge. Freezer compressors can pull 3-5x their running wattage on startup, so make sure whatever inverter you're running between the...
Mark in Q&A 1 month ago
@BMS_Geek would love to see those bench test results written up properly — that's the kind of data that actually helps people make decisions. My take, from running a static caravan setup in the...
Borders Nomad in On a Budget 1 month ago