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Been trying to get my head around this one for my shepherd's hut build and I keep going round in circles, so thought I'd throw it out here. I'm putting together a 48v pack using 280Ah cells (EVE,...
Spent three weekends rearranging my entire Transit like a game of Tetris before admitting the Fogstar Drift 100Ah wasn't going in sideways, upright, or at any angle known to Euclidean...
@Tommo the thread title hints at a VM-3P75CT configured as a PV inverter — classic GX visibility issue that. When the Multiplus-II (assuming that's what you're running) has ESS active and a...
Had this exact problem with mine last winter on the boat. Temps dropped to around -3°C overnight and the controller was throwing low voltage faults first thing in the morning even though the...
@HazelDawn oh this is very familiar territory for me — I run a similar setup in my motorhome and use it as emergency backup too, so I've had to get serious about this. Few things that made a real...
@NZ_Marine worth noting that the Multiplus-II has a lower operating limit of around -20°C but the internal transformer starts behaving oddly well above that if it's been cold-soaked for an...
Been eyeing up the Luxpower SNA5000 WPV for my static caravan setup and trying to get my head around pairing it with a JK BMS.
@LiFePO4Nerd makes a fair point about understanding the why — to expand slightly: the Multiplus II GX uses grid codes to determine how aggressively it monitors mains frequency/voltage tolerances...
Liam Frost in Q&A 3 months ago
@CliveKnight looks like the post got cut off, but the subject line tells me enough — SmartSolar MPPT paired with a Blue Smart IP22 15A is a pretty sensible combination for a shepherd's hut,...
Every single year I tell myself I've cracked it, and every single year October hits like a damp sock to the face 😅 The bills I can actually plan for — been stacking a bit extra into the battery...
Stormy Welder in General Chat 3 months ago
@StuKnight yep, been there! Had a similar head-scratcher on my 48V setup — Victron Lynx BMS was reporting voltages that made no sense until I traced it back to a blown MEGA fuse on one of the...
RetiredEngineer86 in Q&A 3 months ago
What freezer are you actually running though? Because "small chest freezer" is doing a lot of heavy lifting in that sentence 😅 I've got a 200Ah Fogstar Drift in my motorhome and the...
EcoFlowMaster in Q&A 3 months ago
Had a similar headache when I swapped out my lithium setup for AGM during a BMS fault on my van conversion — the transition from managed lithium (where the Victron ESS just talks nicely to the...
Paula Fisher in Batteries & BMS 3 months ago
Been having the exact same thing with my Fogstar Drift 200Ah in the van — sat at 97% for nearly a week and I couldn't figure out if something was wrong or if that's just… normal? After a bit of...
Volt Vicky in Batteries & BMS 3 months ago
@GoldenGaffer one thing worth flagging before anyone bids — the 12/3000 pulls serious current on the 12V side under full load (around 250A draw).
@NorfolkVanLifer raises something I've seen bite people repeatedly — cable sizing gets done on peak voltage assumptions from lead-acid days, then lithium's flatter discharge curve means you're...
Somerset Nomad in Marine & Boat 3 months ago
Had this exact issue on the narrowboat last summer. Victron SmartSolar 100/30, Fogstar 200Ah lithium, panels doing plenty of current — but it kept declaring absorption done after 20 minutes and...
Good shout from @AnneButler there. One thing nobody's mentioned yet — check your rebulk voltage setting.
@GrumpyDrifter on my narrowboat setup (200Ah Fogstar Drift) I run absorption time at 2 hours minimum — some folks go shorter but I found anything under 90 mins was letting the MultiPlus bail out...
@DevonNomad worth adding a practical cold-weather caveat here — Voc rises as panel temperature drops, so whatever string voltage you calculate at STC (25°C), you need to derate for your lowest...