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So this happened to me last month — woke up in the static to a completely dead system. Victron MPPT had thrown a fault, batteries (two 100Ah Fogstar Drift LiFePO4s) were sitting at 2% and the...
Dale Spirit in Emergency & Backup Power 4 months ago thumb_up 6
RobButler | 847 posts @AlisonHughes sounds like you've hit the classic inductive surge problem. Washing machines are notorious for it — the motor startup current can spike to 5-6x the running...
Rob Butler in Inverters & Chargers 4 months ago thumb_up 7
StormySocket | Posts: 1,203 @JennyParker ran almost this exact setup on my narrowboat for about eight months before I finally swapped the AGM out entirely.
Stormy Socket in On a Budget 4 months ago thumb_up 5
So I've got a Victron SmartSolar 100/30 paired with a 200Ah LiFePO4 (Fogstar Drift) in my Transit conversion, and the SOC on the VictronConnect app seems to drift all over the shop.
HollyGazer | Member Running a BMV-712 on my garden office setup and the coulomb counting alone makes it worth every penny over a basic BMS SOC display.
Holly Gazer in Q&A 4 months ago thumb_up 2
NeilBurns91 | 287 posts | 🐑 Shepherd's Hut & EV Tinkerer @StormyHiker worth checking your battery temperature sensor if you've got one fitted.
Neil Burns in Inverters & Chargers 4 months ago thumb_up 3
Great thread @SimonKelly - 14 hours is a proper wake-up call isn't it! One thing worth flagging that often catches people out: check your motorhome's inverter continuous rating versus peak surge,...
RenogyKing in Emergency & Backup Power 4 months ago thumb_up 6
Hey @RogerHobbs, welcome to the club of "solar optimists who got humbled by a Welsh winter!" 😄 One thing I'd strongly recommend looking into is an automatic transfer switch or a decent...
Simon in Emergency & Backup Power 4 months ago thumb_up 3
Really common issue this. Worth checking your cable routing from the MPPT battery terminals to the actual battery — even decent cable has resistance, and under any meaningful load that voltage...
Borders Solar in General Chat 4 months ago thumb_up 4
@WezFisher LiFePO4 in winter is basically that mate who says they'll help you move house but goes mysteriously quiet when it's -3°C outside — the capacity isn't gone, it's just sulking until...
SIE_Electric in Batteries & BMS 4 months ago
@Gazza22 Different world on a boat but the principle's the same — I ran a split-charge relay alongside a B2B for about six months thinking I was getting belt-and-braces protection. What actually...
JX_Boats in Motorhome & Campervan 4 months ago thumb_up 1
OGG_Power | ⚡ 2,847 posts @SuffolkExplorer one thing worth flagging that nobody's mentioned yet — check your BMS discharge rating against what the MultiPlus-II is actually pulling at peak.
OGG_Power in Marine & Boat 4 months ago thumb_up 9
KenGraham | Posts: 847 @JulieEvans Yep, exactly why I added a little Honda EU22i to my setup last year — best decision I've made.
Ken Graham in Emergency & Backup Power 4 months ago thumb_up 5
Running a bit of an experiment on the narrowboat and thought I'd share before asking the question. Currently got a Victron SmartSolar 100/30 feeding a 200Ah Fogstar Drift LiFePO4.
Scouse in Solar Panels & Controllers 4 months ago thumb_up 1
@RayPowell the weight saving alone is worth it on a Custom — I shifted from AGM to a Fogstar Drift 100Ah in my garden office setup and it's transformed things.
Tina in Q&A 4 months ago
I've been living aboard my 57ft narrowboat for about three years now and finally made the jump from AGM to lithium last autumn — 200Ah of Epoch 12V LiFePO4 hooked up to a Victron SmartSolar 100/30...
Vicky Murray in Marine & Boat 4 months ago thumb_up 3
Finally getting round to sorting proper solar on my shepherd's hut and I'm a bit stuck on the wiring config.
Watt Charlie in Q&A 4 months ago thumb_up 5
Not a static situation myself — I'm dealing with a narrowboat and a shepherd's hut — but both have taught me that awkward roof layouts are basically a puzzle worth solving properly before you buy...
Donna Murray in General Chat 4 months ago thumb_up 1
@RayPowell at 100Ah usable capacity the chemistry choice really matters. AGM gives you roughly 50Ah usable before you risk premature ageing; lithium (LiFePO4) gives you 80–90Ah from that same...
Crispy Roamer in Q&A 4 months ago
Something I noticed on my cabin setup — the Victron app's "panel power" figure is calculated from voltage × current at that moment, but it's never going to match the panel's rated output...