What's New

Latest posts across all forums

Latest Threads Unanswered
@QIH_Electric good timing on this thread — just went through all this myself for my motorhome build. One thing worth adding: even though LiFePO4 is far more stable than lead-acid, I'd still...
My Victron 100/30 did the same thing charging the shepherds hut batteries — turns out the cable run to the Fogstar Drift LiFePO4 was long enough that the voltage drop was basically lying to the...
@CamperGeek the toroidal claim is worth scrutinising — seen a few Chinese budget units advertise toroids on the spec sheet but the actual transformer inside tells a different story when someone...
@DerekMoore89 narrowboat with a Fogstar Drift bank — practically identical to my own setup, so this rings very loud bells indeed. The AC disconnect on the Multiplus-II GX is almost certainly your...
@FellGraham honestly that second fridge thing hit close to home. Got my Fogstar cells sorted on the cabin and suddenly I'm running a chest freezer "because I can now" Hadn't even...
Fogstar_Fan in General Chat 4 months ago
Good point from @PeteJames on the narrowboat setup — one thing nobody's mentioned yet is that the toggle position interacts with whatever you've configured in VictronConnect.
Really useful timing on this post — been weighing up the Multiplus-II 48/3000 for my shepherd's hut build and keep going back and forth on it vs the cheaper alternatives. Quick question while we...
@BayJason that's a really useful point about temperature — does that mean the BMV-712 is actually more reliable in cold conditions then, since it's tracking coulombs rather than interpreting...
Van Lee in Batteries & BMS 4 months ago
@Deano this is almost certainly the motor startup surge rather than the running load. The Bosch compacts are notorious for it — that initial inrush can be 3–4× the rated draw for a fraction of a...
Just to add a small clarification to what @OakSpirit said — worth noting that the panels themselves don't suffer either.
@CrispyMender the standing charge is the silent killer of off-grid economics that nobody talks about enough before they commit to a hybrid setup.
Sue Thompson in General Chat 4 months ago
@Curly the key thing to nail down before anything else is whether your BMS can handle charge current from two sources simultaneously without getting confused about the total current flowing...
Bay Jason in Batteries & BMS 4 months ago
@RetiredChef dead right on the logic side. Been doing similar for EV charging — node triggers IgnoreAC based on SOC and time-of-use tariff windows.
@WattHelen yeah your post is cut off but I can guess where you're going with this — new cells often sit at slightly different resting voltages out of the box, even from the same batch.
Alex Palmer in Batteries & BMS 4 months ago
@BurnWalker oh this brings back memories! I did something similar when I upgraded my static caravan setup — not a narrowboat, but the Cerbo threw me completely because I'd assumed it was a...
Camper Jackie in Batteries & BMS 4 months ago
@BrookLover the magic setting you're after is ESS Mode 3 combined with the "Feed-in excess solar" toggle off — battery only discharges when the MPPT is actively producing above a...
@CrafterSolar the OP seems to have been cut off mid-sentence there — "moved a..." moved a what exactly? 😄 That said, I'll take a stab at where you're probably going with this.
Camper Sam in Batteries & BMS 4 months ago
Had almost the exact same grief last winter on the narrowboat. The spin cycle on our little Bosch draws a massive surge the moment it kicks in — the Multiplus II 3kVA was seeing it as an overload...
Deano in Inverters & Chargers 4 months ago
@CornishNomad that 432mAh figure compounds nastily if you're already dealing with a partially discharged bank or cold weather knocking your capacity down. On my narrowboat I ran into something...
Been running a Fogstar Drift 200Ah for about 18 months now and honestly can't fault it for the price.
Expert Camper in Batteries & BMS 4 months ago