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DorsetCruiser | 847 posts Good shout @NorfolkExplorer. Worth thinking carefully about your actual load first — most garden offices are surprisingly manageable if you're disciplined about it. A...
Dorset Cruiser in Emergency & Backup Power 5 months ago thumb_up 1
@CotswoldCamper — had exactly this with my static caravan setup last February. The JK's low-temp cutoff threshold was factory-set at 5°C, which sounds reasonable until your cells are sitting in an...
Stormy Mechanic in Batteries & BMS 5 months ago thumb_up 3
Same unit here, running it on my shepherd's hut build. What fixed it for me was disabling the "Bluetooth auto-sleep" option buried in the BMS settings — it's not obvious in the app but...
Andy Graham in Batteries & BMS 5 months ago thumb_up 1
I've got a Victron SmartSolar 100/30 paired with two 200W panels wired in series (so around 44V Voc) charging a 100Ah lithium (LiFePO4) battery.
Ewan Green in Q&A 5 months ago thumb_up 6
Had this exact issue on my narrowboat setup last year. Turned out the MultiPlus transformer hums more noticeably when the AC input voltage is on the high side — marina shore power can drift well...
Pennine Solar in Inverters & Chargers 5 months ago thumb_up 3
Been wondering the same thing on my boat setup. Quick question for the thread — does the DC-DC charger need to be sized to match your alternator output, or is it more about what your battery bank...
Oak Seeker in Q&A 5 months ago thumb_up 3
Finally got my Orion-Tr Smart 30A wired in last week between the starter battery and a 200Ah lithium leisure bank.
Misty Nomad in DC-DC Chargers 5 months ago
@GoldenMaker done similar with my shepherd's hut setup feeding a small EV. The maths just doesn't work in your favour — 400Ah at 48V is roughly 19kWh usable (assuming you're not hammering below...
Battery Tim in Motorhome & Campervan 5 months ago thumb_up 9
@MarshSoul one thing worth checking that nobody's mentioned yet — have a look at your absorption and float voltage settings in VictronConnect.
Relay Adventure in Q&A 5 months ago thumb_up 8
@VE_Boats good question on the landed cost. From my own recent quotes, Grade B 280Ah cells from Fogstar are working out somewhere around £85-95/kWh assembled into a basic 48V pack once you factor...
Borders Solar in General Chat 5 months ago thumb_up 1
Davo2 | 847 posts @WildWanderer Yes, absolutely viable but the UK weather is your friend here more than you'd think - compressor fridges actually work harder in heat, so our grey summers help...
Davo2 in Motorhome & Campervan 5 months ago thumb_up 4
@VoltDoug would love to see those numbers when you find them — I priced up my narrowboat bank with Fogstar Grade B 280Ah cells about 14 months ago and the same config would cost me roughly 20%...
ExPostie86 in General Chat 5 months ago thumb_up 2
PV_Fan | 312 posts | 🔋 Regular The usable capacity difference is the real kicker — your 100Ah AGM was probably giving you 50Ah usable max, whereas the LiFePO4 you can push to 80-90Ah no problem.
PV_Fan in Motorhome & Campervan 5 months ago thumb_up 5
Really feel your pain on this one @MaxYoung80 — Peak District winters are brutal for moisture. One thing worth trying is a small 12V computer fan running off your Victron system to keep air...
Paddy in Off-Grid Cabins 5 months ago thumb_up 8
ShaunKelly87 replied: @MoorRuss three grey days and 38% on 400Ah lithium isn't actually disastrous — that's your buffer doing its job. The real question is what's pulling it down.
Shaun Kelly in Motorhome & Campervan 5 months ago thumb_up 3
Simon1995 | 203 posts | 🚤 Narrowboat | LiFePO4 Enthusiast Had almost the exact same thing happen on my boat near Fenny Compton last summer.
Simon in Batteries & BMS 5 months ago thumb_up 3
@VoltWill raises something worth expanding on — that elevated Voc in cold conditions isn't just academic.
Defender Adventure in General Chat 5 months ago thumb_up 2
Interesting build @WattAMess25 — did you have to do much cell matching before you built the bank, or did the Fogstar cells arrive reasonably balanced out of the box? Also curious what BMS you...
Forest Dweller in General Chat 5 months ago
DodgySpanner | Posts: 847 @Chunk66 Classic symptom with that unit on 12v — you're asking a lot of current from the battery side.
Dodgy Spanner in Inverters & Chargers 5 months ago thumb_up 1
Good thread. @GoldenBodger one thing worth trying that hasn't been mentioned — have a look in VictronConnect at the AC input voltage range settings.
Davo2 in Inverters & Chargers 5 months ago thumb_up 8