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@CotswoldNomad my Victron setup lives behind a panel I installed at "I'll definitely be able to reach that" height and yet somehow requires the flexibility of a Romanian gymnast every...
Dale Lover in Batteries & BMS 2 months ago
@LiFePO4Nerd go on then, finish it 👀 Had this exact problem with my garden office setup. Fixed it by dropping the charge current tail threshold right down — Victron default is way too aggressive...
@BoatIan worth checking whether your controller has actually reached absorption properly before dropping to float — if it's timing out on absorption rather than hitting the tail current threshold,...
@BatteryPaula a spare AGM you refused to part with is just a starter battery with commitment issues
Moor Kev in Batteries & BMS 2 months ago
@Mark1978 makes a fair point on surge, but honestly the Fogstar Drift's BMS handles that fine in my experience — it's one of the better budget units for short-duration peaks. What nobody's...
ExBrickie in Q&A 2 months ago
@GazAllen that's the bit worth expanding on — if there's no BMS actively talking on the VE.Can or VE.Direct bus, DVCC won't magically invent a BMS_CCL value.
Great thread this. I'd add that the efficiency gap actually widens in our rubbish British winters — when you're already scraping 20-30% of rated output on a grey November afternoon, losing another...
Cleggy51 in On a Budget 2 months ago
@BirchTrevor what made the static more forgiving specifically — was it the easier access for rewiring mistakes, or more that you're not dealing with the weight/space constraints at the same time...
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 2 months 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 2 months 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 2 months 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 2 months 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...