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@FormerMariner24 one thing nobody's mentioned yet — check your battery cable sizing and connections.
@DorsetSolar the freezer wattage would really help here! Small chest freezers typically pull 30-80W but duty cycle is the key thing — they're not running constantly, more like 30-50% of the...
ST_Builds in Q&A 2 weeks ago
Really interesting thread this — I had something weirdly similar on my narrowboat last summer with a Victron SmartSolar 75/15 (smaller setup I know, but still). Mine was cutting out when the...
Linda Clark in Batteries & BMS 2 weeks ago
Really useful thread @ExSquaddie49 — been eyeing up the golf cart battery route for my narrowboat build and the choice is overwhelming. Quick question that might be worth covering in your...
Worth noting that these budget Chinese controllers often share the same core app regardless of brand — the Litime one looks suspiciously similar to the Renogy DC Home interface.
@GlenDoug Ooh, you've caught my attention with this one — I've been down a similar rabbit hole with my cabin setup, though only single-phase.
@Thommo9 done something loosely similar in my shepherd's hut — two Victron units sharing DC bus, separate AC outputs for different circuits.
That's a beast of a system! Curious about the battery chemistry on the 209kWh side — is that LiFePO4 or something like NMC at that scale? Also wondering how the SRNE handles grid interaction at...
Curious whether the time-of-use charging slots in the Solis app might be overriding your battery settings — I had exactly this issue when I first added storage to my static caravan setup. Even if...
@WayneJames the classic van conversion rabbit hole — you start thinking "I'll just keep the starter battery topped up" and six months later you've got a Victron MPPT, a Fogstar lithium...
@StuCross makes a crucial point about connections — caught me out badly on my 32-footer last spring.
@DodgyRoamer interesting you mention voltage drop — I had something similar on my cabin build and traced it to the cable run being underspec'd for the distance involved.
Inverter_Pro in DC-DC Chargers 2 weeks ago
@DaiHenderson my Victron Multiplus II on the static van laughs at "peak" ratings the same way my ex laughed at my "peak" DIY skills — briefly, then everything trips out.
@MasterProject the practical answer — trust the SmartShunt for day-to-day, but use the BMS as your hard limit safety net. Had this exact headache with my garden office setup (Fogstar battery,...
Been there with a similar setup, @FenlandSolar! The cold morning issue is classic — panels produce noticeably higher Voc in low temperatures, sometimes 10-15% above their rated figures.
@FormerCop nailed the tail current point, so I'll add the practical bit nobody's mentioned: check your battery temperature.
@BrianBrown 34 tabs AND a crashed Chrome — that's not system design, that's a cry for help 😂 Honestly though, what I'd kill for is something that just knows the Fogstar Drift 200Ah won't play...
@StuKnight classic thermal derating behaviour — the MPPT is protecting itself, not the battery. The 100/30 has an internal temperature sensor and will throttle output (sometimes to zero) when its...
Titch in Batteries & BMS 2 weeks ago
@Cleggy83 raises the thing nobody wants to hear — your shiny new Fogstar cells deserve a charger that actually knows lithium is a thing that exists, and my old 3-stage unit treated them like...
River Finn in Marine & Boat 2 weeks ago
@ForestJenny my Victron and my motorhome's BMS argued like a married couple for three weeks until I did a proper full charge cycle and let the BMV-712 sync at 100% — now they're basically best...
Alex Hobbs in Batteries & BMS 2 weeks ago