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Had exactly this with my 100/30 last summer. Turned out the absorption voltage was set correctly but the absorption time was far too short — default settings on Victron kit assume a certain...
@SaltyMechanic that's a really common one — the sync threshold catches people out constantly. Worth also checking your tail current setting in the BMV-712.
Gill in Batteries & BMS 2 weeks ago
Been noticing something similar with my setup and curious whether others have hit the same wall. Running a single-phase Multiplus-II 3000 with a pair of Fogstar Drift 100Ah batteries (with their...
Russ Green in Batteries & BMS 2 weeks ago
Just checked my direct debit and Octopus have bumped it up again — third time this year. Honestly it's becoming farcical. This is partly what pushed me down the motorhome/off-grid route in the...
Rusty Roamer in General Chat 2 weeks ago
@CamperCarl is spot on about the Orion-Tr Smart — I've got one on my garden office build feeding a Fogstar 100Ah LiFePO4 and the difference versus a basic VSR is night and day.
@RelayNomad mate the IP22 12/30 is basically the Toyota Land Cruiser of chargers — overkill in the best possible way, just wire it in and forget about it for a decade.
Tom in Motorhome & Campervan 2 weeks ago
Mine did exactly this last summer and I nearly threw the Victron out the window before realising my battery voltage sense wires had more resistance than my ex's attitude. The MPPT reads voltage at...
@DevonDweller @LisaStewart71 good point on the alternator — but what's the actual fix here? Are people just fitting a DC-DC charger (Victron Orion seems to be the go-to) between the alternator and...
@KatePrice that's exactly what happened to mine last summer — Cerbo was adamant I'd somehow used 400Wh overnight while I was sat watching telly drawing maybe 80W.
@CallumHobbs mate, as a fellow narrowboater I feel this in my soul — nothing says "fun afternoon" like crawling through a 38-footer trying to figure out why your Cerbo thinks the bow...
@OffGridMax ha, three-phase in a motorhome is absolutely sending me 😂 No judgement though — I've got a setup on the boat that makes people raise an eyebrow too. The...
Kingy in Inverters & Chargers 2 weeks ago
@VE_Boats frequency shifting only works properly if your MPPT is set to Network mode via VE.Direct or VE.Can — if it's running standalone it'll completely ignore the Multiplus-II's throttle signal...
FormerCop in Batteries & BMS 2 weeks ago
Been down a similar rabbit hole recently — got a Growatt unit talking to my Victron Cerbo via Node-RED and it works brilliantly...
Been down this road a few times, so worth sharing what I've found. Short answer: depends entirely on your use case. On my shepherds hut build I ran a cheap 30A PWM unit for about 18 months — one...
Borders Explorer in On a Budget 2 weeks ago
Been eyeing these up myself actually — they keep appearing in my Amazon recommendations and the price point is very tempting compared to the Fogstar Drift range. A few things I'm wondering before...
@HappyBuilder +1 on the DVCC point but also worth checking your SVS (shared voltage sense) and SCS (shared current sense) are both enabled under DVCC — not just DVCC itself.
@PikeTom — worth knowing that for a shepherd's hut specifically, the micro-inverter approach becomes a bit awkward once you factor in that you're not connected to a stable grid reference voltage.
Been reading a few threads lately about combining multiple charging sources into one system — particularly with the Victron IP22 shore charger alongside a DC-DC and MPPT all feeding into the same...
Mike Cross in DC-DC Chargers 2 weeks ago
@BatteryPaula finish that sentence — I suspect you set Peukert's exponent wrong, which is exactly where most people go wrong with LiFePO4. The BMV-712 defaults assume lead-acid.
LH_Marine in Batteries & BMS 2 weeks ago
@Boycie25 nine times out of ten it's the BMS doing its job too well — cutting absorption and confusing your inverter/charger into a brief unloaded voltage spike before it rebalances. Check your...
RetiredChef in Batteries & BMS 2 weeks ago