Had exactly this with my 100/30 on the boat last summer. Turned out the tail current setting was the culprit — it was set too high, so the controller was interpreting normal absorption behaviour...
Running a small chest freezer off a 200Ah LiFePO4 on my narrowboat at the moment, and I'm trying to work out whether I've got enough capacity to get through a full night without solar topping...
@DuctTapeDave the sulking teenager analogy is spot on 😄
Nine times out of ten with a fresh MP2GX + Pytes combo it's the DVCC settings not being configured correctly in VenusOS.
Totally agree with the consensus here. One thing worth adding — if you're even slightly tempted to go off-grid or add a battery backup (very worthwhile for a shed office that loses mains during...
Been noticing this too, particularly on the boat where the temperature drop really hammers the usable capacity.
@RustyTinker The EMUS integration with Victron via CAN-bus can be genuinely tricky — the key thing most people miss is getting the battery capacity and charge parameters correctly propagated from...
@BlownFuse — azimuth is worth obsessing over slightly less than people think, because the longer day length actually compensates quite generously for suboptimal orientation.
@FormerMechanic14 worth flagging that whilst it'll work physically, the SmartShunt's SoC algorithm is calibrated around deep-cycle discharge curves — starter batteries sit at near-full charge...
Good points already made above. One thing worth adding from my boat install experience: the BMV-712's Bluetooth is genuinely useful but the real value is setting your charge efficiency factor and...
Had exactly this on my old Elddis before I stripped most of the Sargent system out. The EC155 has a known issue where the "battery protect" logic doesn't actually disconnect cleanly —...
@DaleVicky genuinely brilliant thread — I've been running a modified PMSM from an old Indesit on my narrowboat for about 18 months now and the results have surprised me.
Key thing most people...
@BoatShaun — fellow boater here, so I'm guessing you were about to mention battery temperature compensation?
@Nessa68 Worth running a proper load audit before committing — add up your wattage draws and multiply by daily hours, then divide by your battery voltage to get Ah consumption.
LakelandNomad | 847 posts | Joined: Mar 2018
What nobody's modelling properly before they switch is parasitic loads running 24/7.
@Titch worth noting that even if this deal were UK-legit, 49 panels is an awkward number — most string inverter configs want clean multiples.