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Picked up 4x 280Ah LiFePO4 cells from Fogstar last spring, built a 12V 280Ah bank with a Daly BMS. Summer was brilliant — barely touched 90% most days with the solar keeping up. Come November...
Spent an embarrassing amount of time agonising over this exact thing before rewiring my motorhome last year.
Dorset Dweller in General Chat 5 months ago thumb_up 2
I've got a 400W solar setup on my cabin roof (2x 200W panels, Victron MPPT 75/15, 200Ah AGM bank) and it does the job well enough from April through September.
Ed Stewart in Off-Grid Cabins 5 months ago thumb_up 3
Hey @BenJackson, great shout on the Orion-Tr Smart. One thing nobody's mentioned yet — the input voltage lockout feature is a proper lifesaver for protecting your starter battery.
Breezy Ranger in DC-DC Chargers 5 months ago
@QMC_Camper has already flagged the critical bit — Voc headroom — so I won't repeat that. What I will add: three 200W panels in parallel keeps your Voc identical to a single panel, so if you're...
Barry Wood in Q&A 5 months ago thumb_up 5
WattEd | 847 posts @TracyRobinson makes a solid point on usable capacity — worth extending that thought into chemistry selection.
Watt Ed in Q&A 5 months ago thumb_up 5
KenMitchell | 203 posts Great move @ForestJenny — 200Ah usable is a completely different world to what you were running before.
Ken Mitchell in Motorhome & Campervan 5 months ago thumb_up 7
From my shepherd's hut setup I can say the battery sizing is where most people come unstuck. EV charging even at 7kW will hammer a modest pack overnight.
Gill in Garden Offices 5 months ago thumb_up 3
ExFirefighter | 312 posts @BorderWanderer Same situation on my hut — ended up ditching roof-mount entirely and going ground-mounted on a tiltable frame about 4 metres south of the building.
ExFirefighter in Off-Grid Cabins 5 months ago thumb_up 3
Hey @BatteryDoug, good choice on the DC-DC charger for LiFePO4 — it'll properly manage the charging profile rather than just dumping voltage at it. To answer your question directly: it really is...
Dale Ben in Motorhome & Campervan 5 months ago thumb_up 3
NaeClue | 1,847 posts | Location: Array | Interests: van_conversion, off_grid_living, cabin, motorhome 48v on my van conversion and honestly the thinner cable runs alone are worth the...
NaeClue in Inverters & Chargers 5 months ago
Planning a full-time van conversion and trying to nail down the solar setup before I start cutting holes in the roof.
JH_Power in Q&A 5 months ago thumb_up 5
Hey @FogstarFan — 35°C at 22°C ambient is a 13°C rise which is on the higher side for LFP at that current, but not alarming.
Ella Davies in Batteries & BMS 5 months ago thumb_up 2
Cleggy83 | 156 posts Honest answer — 100Ah Fogstar Drift (yes, another one 😄), 175W panel on the roof, and a little Honda EU22i petrol genny as my actual get-out-of-jail card.
Cleggy83 in Emergency & Backup Power 5 months ago thumb_up 7
Really interesting thread this. I've been running a second-gen Leaf 40 kWh pack (similar to @Declan1985) for about six months now, but mine's purely grid-tied with a Victron MultiPlus-II handling...
Terry Lewis in Emergency & Backup Power 5 months ago thumb_up 7
KellyRobinson | 23 posts Interesting to see this used in a static — I've been running a Delta Pro on my narrowboat for about eight months now and the main thing I'd flag is the inverter efficiency...
Kelly Robinson in Q&A 5 months ago thumb_up 7
Jonny45 | 📍 South Yorkshire | ⚡ Off-grid cabin / LiFePO4 280Ah @BorderNomad I've got a Victron setup paired with a Growatt inverter-charger on a secondary system and faced exactly this.
Jonno45 in Monitoring & System Design 5 months ago thumb_up 9
Deano13 replied: @EllaDixon71 One thing nobody's mentioned yet — have you checked your panel voltage under load in cold weather?
Deano13 in Solar Panels & Controllers 5 months ago thumb_up 4
I've had my Multiplus 12/3000/120 installed for about three months now and overall I'm chuffed with it, but I keep getting confused about how it handles switching over to my Honda EU22i when I...
Suffolk Dweller in Inverters & Chargers 5 months ago thumb_up 2
XAC_Solar | Posts: 847 @WonkyWelder Similar setup here — had a 100Ah LiFePO4 tucked in a Sprinter for a couple of years doing exactly that role.
XAC_Solar in Motorhome & Campervan 5 months ago thumb_up 2