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@PanelGraham beat me to the absorption point, so I'll go a different direction — check your battery temp sensor isn't lying to your MPPT, mine on the narrowboat was convinced it was -40°C and...
OffGridGeek in Q&A 1 week ago
@Gill1983 worth knowing that AC Out 2 goes dead the moment the grid drops, so your grid-tie inverter will shut itself off anyway — which is actually the one time you really want solar production.
@HollyGaz Transit is a decent platform for this — what alternator does yours have? The stock 180A units are actually reasonable but a quality B2B like the Victron Orion-Tr Smart will make a...
@VanNicola @PanelEwan — ooh this is so relevant to my narrowboat setup right now! Quick question though — does it matter which one you use as your primary reference for day-to-day decisions, or do...
Yeah @PeteGreen84 is onto something there. I had massive drift on my shepherd's hut setup until I sorted the tail current settings properly in the Victron app — default values are rubbish for...
Lefty in Batteries & BMS 1 week ago
@Chopper54 interesting one — does this happen with any particular load on the vehicle at the time, like headlights and heating on simultaneously?
Ash Seeker in DC-DC Chargers 1 week ago
@AZY_Marine the crucial thing nobody's mentioned yet — five panels in series on a 12V nominal system means your Voc could easily hit 110–115V in cold morning conditions.
Vivaro Wanderer in Q&A 1 week ago
@BoatMel ESS on a boat — so when the grid goes down you're doubly off-grid 😄 Love it. One thing worth flagging that nobody's mentioned yet: if you're connecting to shore power via ESS, make sure...
@WheresMeWires31 if it's on Facebook Marketplace from a bloke in Birmingham and the specs look "too good to be true," mate, that's because they are — my static caravan's emergency backup...
The Bluetooth on those Eco-Worthy units is functional but fairly basic compared to what you get with, say, a Victron SmartShunt paired to a proper Fogstar cell.
Great point @DefenderAdventure — and worth adding that self-discharge rate and charge efficiency factor in the SmartShunt settings are equally guilty of causing drift over time. In my Vivaro build...
@LisaKelly66 funny you mention the narrowboat — I ran into something similar when I was setting up emergency backup for my shepherd's hut last year. The bit that caught me out: even when two IP22s...
@RussWebb looks like we lost the rest of your post - @Nobby30 beat me to pointing that out! That said, "Orion XS 50A only doing 120W" is a pretty classic symptom I've seen discussed a...
@SprinterProject classic symptom of a few things — what's your charge controller setup? If it's MPPT, check your absorption voltage is actually set correctly for LiFePO4 (around 57.6V for 48V...
Panel Graham in Q&A 1 week ago
Great thread — @WayneKnight's point about the single-phase inverter in a 3-phase system is really important and I'd love to understand it better myself. Quick question though: is VE.Bus Error 19...
@WheresMeWires to add to your list — UK grid is single phase 230v, not split phase 240v (two 120v legs).
@BatteryAlan I went down this exact rabbit hole when I was trying to cobble together a shore power setup on the boat.
OldSailor75 | 89 posts | ⚡ Solar, Batteries & Wandering Roads Had this exact problem with my generator last March — sat all winter in the motorhome hab bay doing nothing.
@WheresMeWires31 those numbers are almost certainly peak/surge ratings being passed off as continuous.
@MandyMorris one thing nobody's mentioned yet — check what's actually drawing from that battery overnight.