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Really useful thread this — I've got a 120Ah LiFePO4 under the stairs doing exactly this job. One thing worth mentioning that I don't see covered yet: invest in a decent low-voltage disconnect if...
Cotswold OffGrid in Emergency & Backup Power 6 months ago thumb_up 2
Good thread, this. @AnneHenderson82 raises a good point — curious what you've found there. One thing I'd add: have you checked your grid meter's CT clamp positioning and orientation?
Chris Campbell in Q&A 6 months ago thumb_up 7
Hey @SaltyTrekker, yeah that 11W figure is very much a "best case in a lab" number in my experience.
Shaun Johnson in Inverters & Chargers 6 months ago thumb_up 4
WattTony | Posts: 1,203 | Location: Norfolk Worth adding to what @StormyRigger and @Davo83 have touched on — the real headache with your specific combo is that 175W Victron sitting in parallel...
Watt Tony in Solar Panels & Controllers 6 months ago thumb_up 6
Been running a split bank setup on the boat for about eight months now — 200Ah lithium (Fogstar Drift cells) as the service bank and a separate 110Ah AGM for engine start.
River Runner in Monitoring & System Design 6 months ago thumb_up 5
Just swapped out my old PWM setup for a Victron SmartSolar MPPT 100/30 on the boat and honestly the difference in low-light harvesting is embarrassing — old controller basically took November...
Volt Tom in Marine & Boat 6 months ago thumb_up 2
@JakeHall76 the Squirrel is a cracking little stove — had one in my cabin for three winters now. The thing nobody mentions until it's too late: the heat absolutely murders your battery readings if...
Pike Walker in Off-Grid Cabins 6 months ago thumb_up 7
SolarPaul | 1,847 posts @WonkyDrifter Worth checking a couple of things the others haven't mentioned yet.
Solar Paul in Q&A 6 months ago thumb_up 8
StormyMechanic | 1,204 posts | ⭐ Trusted Member The thing that caught me out early on — and nobody warned me — was the split-charge relay dumping alternator voltage straight into batteries that...
Stormy Mechanic in On a Budget 6 months ago thumb_up 4
@OllieThompson73 same story here — grabbed my last batch of 280Ah cells literally within an hour of a restock notification.
Sunny Viking in General Chat 6 months ago thumb_up 5
FZO_Marine | 312 posts | ⚓ Liveaboard & Off-Grid @WattRoger good timing on this thread — BSS and lithium is still a bit of a grey area that catches people out.
FZO_Marine in Marine & Boat 6 months ago thumb_up 2
Jumping in here as I've been running almost exactly this setup for about eight months now. What I ended up doing was using a separate Raspberry Pi Zero 2W sat alongside the Cerbo purely to handle...
Tracy Robinson in Monitoring & System Design 6 months ago thumb_up 3
CotswoldVanLifer | 312 posts @CrafterDream I'm running Drift cells in my van build rather than a home backup, but same cells so hopefully useful — I went with a JK BMS as @KangooBuild mentioned,...
Cotswold VanLifer in Batteries & BMS 6 months ago thumb_up 3
Picked up a 100A Daly BMS late last year for my 280Ah LiFePO4 build in the van. All seemed fine through autumn but now we're hitting proper cold nights (we're talking 2–4°C inside the van in the...
Dan Fisher in Batteries & BMS 6 months ago thumb_up 2
@PV_Fan tried something similar at my place last summer. Theoretically fine, practically a nightmare unless you've got really consistent sun. Problem is your Multiplus-II is inverting to run that...
Wonky Welder in Off-Grid Cabins 6 months ago thumb_up 1
Yeah, the relay issue is real. Had the same setup in my static before I knew better — relay just sees "voltage high enough, connect" and your LiFePO4 just sits there half-charged...
Midge52 in Q&A 6 months ago thumb_up 3
Thinking of keeping my narrowboat on the cut through winter this year rather than laying her up, and I'm trying to work out if my current solar setup is actually going to cut it for keeping a 12v...
Ollie Graham in Marine & Boat 6 months ago thumb_up 2
I've had a single 200W mono panel on the roof of my narrowboat since last March and through summer it was brilliant — regularly hitting 150W+ on a clear day and keeping my 100Ah lithium topped up...
Boat Shaun in Q&A 6 months ago thumb_up 2
Roger1983 | Posts: 847 | Location: Peak District @StormyNomad Classic cold weather LiFePO4 issue this.
Roger in Batteries & BMS 6 months ago
Great thread @HarryMorgan. Just to add to what @Curly66 was getting at — the key thing people often miss is that G98 applies to single-phase systems under 3.68kW export, which most domestic setups...
YM_Power in Inverters & Chargers 6 months ago thumb_up 8