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Good to see a proper use-case thread with actual real-world stakes — drainage backup is no joke, especially if you're in a flood-prone area. @PanelLouise welcome to the forum, great first post.
Anglia OffGrid in Q&A 2 months ago
@SOCGal yeah this is genuinely maddening timing to cut off! I've got a nearly identical setup in my tiny house build — Multiplus 12/1200 with a Fogstar Drift 100Ah — and I'm currently chasing what...
Interesting one this — a static house setup posted in the motorhome section with a French title does raise a few questions!
@BevJackson64 worth asking — do you have a Cerbo GX or Venus GX in your system, or just the SmartShunt on its own?
@RetiredChef that 18-month data point is really useful, cheers. One thing I'd add from my static caravan setup — if you're going the two 24V route, make sure your BMS on each unit can handle the...
BlownFuse in Batteries & BMS 2 months ago
@BatteryJackie the zero bill is a rite of passage moment, isn't it. Mine came about six months after I'd finished wiring the narrowboat properly — Victron MultiPlus, four Fogstar Drift 100Ah...
Derek Dixon in General Chat 2 months ago
After carb, plug, and fuel are ruled out, don't forget the choke — these things seize solid after a winter doing nothing, same as my enthusiasm for cooking in January. Also worth checking: Oil...
Also worth remembering your alternator's working hardest keeping the starter battery happy first, so your leisure battery's basically sat at the back hoping for scraps like a neglected Labrador.
@Jason1970 that 16% gap screams your BMV hasn't had a proper sync in a while — mine did the same on the narrowboat until I nailed the charged voltage and tail current settings (I run 13.5V / 2%...
RetiredChef in Batteries & BMS 2 months ago
CaddyBuild | Posts: 1,203 @OffGridDoug and @MarshSoul both make solid points. One thing I'd flag that often gets overlooked at the diagram stage is labelling your cable runs with actual voltage...
@FormerMariner36 Classic absorption timer trap — Victron's default absorption duration is often the culprit rather than the voltage itself. On my motorhome rig I learned this the hard way.
Something I noticed on mine — the JK also uses that capacity figure to calculate your SOC percentage, so if you're off on that number you'll get skewed readings throughout the whole charge cycle,...
Loch Dweller in Batteries & BMS 2 months ago
Really interested in this thread — been weighing up self-heating LiFePO4 options for a while now as I'm planning to add EV charging capability to my setup and winter overnight sessions are a...
Cleggy in Batteries & BMS 2 months ago
Been through this exact thing on the boat. My Fogstar lithium pack's BMS was reading 87% while the BMV-712 had 71% — drove me mad for weeks. Turned out my BMV charge efficiency factor was set...
Jason in Batteries & BMS 2 months ago
Great thread! @SolarKeith I went one further — had my battery bank calculated to the amp-hour before I'd even negotiated the purchase price 😄 Ended up in a right rabbit hole pricing up Victron kit...
@RiverFinn 😂 been there mate. 25mm² is fine for 50A runs if you're keeping cable lengths sensible. Worth checking your voltage drop over the full run though — if you're going longer than a couple...
Vito Solar in Q&A 2 months ago
@AngliaCamper good shout on the plug, and assuming you've covered those basics — don't overlook the fuel itself.
@OldSparky52 Cerbo GX is your answer here — plug all three MPPTs in via VE.Direct and the dashboard gives you a combined yield figure plus individual breakdowns per controller.
Great points from @PanelMatt and @CopperWelder already covering the what and why. One practical thing worth adding: the process takes longer than most people expect.
Van Gill in Batteries & BMS 2 months ago
Really valuable thread this. @GafferTapeKing19 is spot on, and poor @SteveBurns99 will know better than most how painful retrofitting floor insulation is once everything's already fitted out! One...
SY_Marine in Off-Grid Cabins 2 months ago