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Adding to what @WillHall said about charge voltages — worth having a look at your Victron SmartShunt data over the past few weeks.
Chopper72 in Batteries & BMS 6 months ago thumb_up 4
@OllieThompson73 going through exactly this for my shepherd's hut build right now. Been signed up for the restock notification emails but they seem to land about 20 minutes after everything's...
Alan Ward in General Chat 6 months ago thumb_up 9
I've got a 400W setup on the roof of my narrowboat — two 200W panels wired in series, feeding into a Victron SmartSolar 100/20.
Pennine Boater in Solar Panels & Controllers 6 months ago thumb_up 5
@Finn1975 is the 8-10% gap consistent regardless of charge level, or does it drift more at certain points?
Grumpy Drifter in General Chat 6 months ago thumb_up 1
@Bomber Happy to help you work through this properly. First step is to tot up your actual watt-hours — roughly speaking a laptop draws 45-65W, each monitor around 20-30W, router 10-15W, lamp maybe...
Silver Warden in Q&A 6 months ago thumb_up 8
Same thing hit my setup in the shepherd's hut last winter. Dropped to roughly 75-80% usable on really cold mornings — caught me out a bit at first. Worth knowing it's not permanent damage though.
FormerMechanic15 in Batteries & BMS 6 months ago thumb_up 7
Seen this exact thing with my setup. The Multiplus sees a voltage spike when a cloud clears and briefly hits absorption target, then decides "job done" and boots it to float before the...
Gaz Allen in Inverters & Chargers 6 months ago thumb_up 7
Noticed something odd this week — my Victron SmartSolar 100/30 has been showing lower wattage figures than I'd expect given the conditions.
Rob Robinson in Q&A 6 months ago thumb_up 1
Curly7 | 2,341 posts @RetiredChef2 One thing worth adding before you head over to the Waterways subforum — your charging sources will need attention too.
Curly7 in Motorhome & Campervan 6 months ago thumb_up 3
MarineDoug | 1,203 posts @KangooSolar worth knowing that even if you sort the BMS settings, charging LiFePO4 below about 5°C genuinely isn't great for the cells long-term regardless - you can get...
Marine Doug in Batteries & BMS 6 months ago
MXM_OffGrid | 1,204 posts @RetiredChef2 Jumping in before you migrate to the right subforum — lithium on a narrowboat is absolutely worth it in my view, but the boat context does add a couple of...
MXM_OffGrid in Motorhome & Campervan 6 months ago thumb_up 1
@SaltyTrekker the isolation alone sold it for me. Had a generic unit cook itself because it decided my vehicle chassis and battery bank should have an impromptu conversation at 3am.
Jock in DC-DC Chargers 6 months ago thumb_up 3
I picked up a 40A MPPT controller off AliExpress back in January for about £28 — branded "Renogy-compatible" which should've been a red flag, but I was fitting out a small camper on a...
Ella Dixon in On a Budget 6 months ago thumb_up 3
Linda1970 | 312 posts @LutonDream congrats on getting it done! The fridge caught me out too when I first built mine.
Linda in General Chat 6 months ago thumb_up 4
Running dual BMV-712s on my narrowboat for two years and the one thing nobody ever tells you is that the synchronisation of the "charged" detection settings matters enormously — if both...
FETFan in Monitoring & System Design 6 months ago thumb_up 4
Great timing on this thread @TransitProject — I made the same swap about eight months ago on my Transit Custom build and honestly it's one of the better upgrades I've done. The thing people don't...
Valley Solar in Motorhome & Campervan 6 months ago thumb_up 7
Callum1982 | 847 posts @OllieRoss74 Nice one getting it positioned on a south-facing slope — that's half the battle sorted already!
Callum in Off-Grid Cabins 6 months ago thumb_up 7
@LizWalker 11 hours is a proper test. Had a similar scenario last winter with my static caravan setup. What failed for me: the inverter's standby draw — didn't account for it sat idle.
WhatsAFuse65 in Emergency & Backup Power 6 months ago thumb_up 1
JasonPhillips | Posts: 312 @PartnerConvert The monitoring gap is a real frustration with mixed systems — I've been there.
Jason Phillips in Monitoring & System Design 6 months ago thumb_up 7
DailyDream | 1,203 posts @NeilJackson what discharge rates are you actually hitting during peak load?
Daily Dream in Batteries & BMS 6 months ago thumb_up 7