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Had exactly this with my narrowboat setup — turned out my absorption voltage was set so low the controller thought it had already finished before it even started, so it just sat in bulk looking...
Cornish Nomad in Batteries & BMS 3 months ago
Bit of a niche one this, but curious if anyone's gone down this route... I've been thinking about the voltage sag issue when big loads kick in — obviously not running a 3-phase setup myself...
Julie in Batteries & BMS 3 months ago
Been mulling this over after a similar headache on my static caravan setup last winter, so thought I'd throw it open here. I'm running a pair of Victron Quattro 48V/5kVA units in a stacked...
Great points from @MarineGeoff and @OldSailor already. I'd add a few that caught me out: Cell-level fusing — individually fused cells can save your bacon if one goes rogue, especially in a...
Been down this rabbit hole for the past few months whilst planning out my van build and I keep coming back to the idea of using a salvaged washing machine motor as a PM alternator for a small wind...
LDV Nomad in On a Budget 3 months ago
@OldSailor meanwhile my Fogstar cells are just sat there fully charged, ready to help National Grid, while I'm still waiting for paperwork to clear 😅
Brummie84 in Batteries & BMS 3 months ago
Bit of an odd one this, but I've been mulling it over since someone on another forum raised something similar. Running a single 450W panel into a 48V LFP system — what's the sensible controller...
MarinePhil | 2,341 posts | ⭐⭐ Expert Member @AlanWard to add some practical weight to what's already been said — I ran a similar comparison when speccing out my last motorhome build.
Jumping in while we wait for the full post too — the thread title says enough really. One thing worth flagging before @DontPanic gets chance to clarify: the AC coupling vs DC coupling question is...
DODQueen in Batteries & BMS 3 months ago
Series wiring sorted my motorhome setup faster than you can say "Victron warranty void" — two panels in series gets you well past 60V and the SmartSolar stops sulking immediately.
Unregulated source straight into AGM through an Anderson = you're basically asking the battery what its pain threshold is before it vents. The grey plug on most caravans/motorhomes is wired for...
@Wayne1980 Worth having your inverter/charger set up so you can bypass the main battery bus entirely if needed.
Wez in Inverters & Chargers 3 months ago
Had this exact headache last winter with my static caravan setup — Victron MPPT 75/15 paired fine first time, then I factory reset it when troubleshooting a battery issue and completely lost the...
@FenlandSolar G98/G99 is exactly where dreams go to die — DNO response times can stretch to months, so factor that into any export project timeline before you get excited. Worth flagging: the...
OldSailor in Batteries & BMS 3 months ago
OakSpirit | 🚐 Van & Boat | 1,203 posts Running Victron on my narrowboat for three years now. The comms ecosystem alone justifies the premium — VE.Bus, VE.Direct, VE.Can all talking to a Cerbo...
Oak Spirit in Marine & Boat 3 months ago
Had this exact problem in my shepherd's hut build last year. The Orion was mounted flat against a wooden panel — looked tidy but was basically a thermal disaster.
Gill in DC-DC Chargers 3 months ago
@GoldenMechanic great question. Without a BMV or battery sensor, your SmartSolar is essentially guessing at battery temperature and defaulting to 25°C as its reference point.
@ThingamyBob yes, ran exactly that config in my motorhome last summer — two Fogstar Drift 100Ah in parallel feeding a Victron Phoenix 1200W, and the load sharing worked a treat.
Ran into this on my shepherd's hut setup last year — different cause to what's been mentioned though.
@SolarNotSure beat me to it but yeah, sounds like someone's GPS and their forum bookmark are both pointing to the wrong country 🗺️