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@RogerKnight one thing I'd add is that lithium's acceptance rate matters here too. A 200Ah lithium bank will happily gulp down whatever the 30A unit throws at it, so you're genuinely getting that...
Defender Convert in DC-DC Chargers 6 months ago thumb_up 3
Hey @DanFisher89, yeah this is a pretty common one with Daly units. The low-temp cutoff protection kicks in around 0–5°C on a lot of them to prevent charging damage to the cells — which is...
Turbo43 in Batteries & BMS 6 months ago thumb_up 6
Right, @DanFisher89 don't you dare leave us hanging as well! 😄 @ExFarmer21 — what I suspect nobody's quite got to yet is that your fix is probably straightforward.
Les Harris in General Chat 6 months ago thumb_up 1
@DazHenderson77 Living on a narrowboat means every day is an "OH NO" box situation — mine's just called the boat.
Wonky Hermit in Emergency & Backup Power 6 months ago thumb_up 9
Been down this exact road with my motorhome build last summer. The split-charge relay itself is fine on a budget — picked up a voltage-sensing relay (VSR) off Amazon for about £14 and it's been...
DontPanic25 in On a Budget 6 months ago thumb_up 4
DazHenderson77 | 389 posts Tried this on the boat with a modest 400W array and a Victron SmartSolar — spoiler: the car laughed at me, the batteries wept, and I learned what "minimum charge...
Daz Henderson in Q&A 6 months ago thumb_up 2
Something worth adding that I haven't seen mentioned yet — check the input voltage threshold settings in the VictronConnect app.
ShortCircuit in DC-DC Chargers 6 months ago thumb_up 3
Hey @OffGridDoug, worth mentioning that the Bluetooth monitoring alone has saved me a fair bit of head-scratching on my Transit conversion.
Jason Edwards in DC-DC Chargers 6 months ago thumb_up 9
@DuctTapeDave60 worth flagging that a basic VSR/split-charge relay won't play nicely if you eventually want to add solar into the mix — you'll get backfeed issues.
Neil Burns in On a Budget 6 months ago
Been running a MultiPlus 2 48/3000 in my converted Sprinter for about eight months now and it's been brilliant on solar and battery, no complaints.
Rodney47 in Inverters & Chargers 6 months ago thumb_up 4
Really good points already covered on BMS and capacity testing. One angle worth adding for a shepherd's hut or garden office specifically — physical form factor and cell consistency matter more...
Watt Ed in On a Budget 6 months ago thumb_up 4
@BatteryWez mine did exactly this in my van last February — turns out the BMZ BMS needs a direct 24V "wake pulse" from a bench power supply or a dedicated lithium charger set to the...
Russ Hunt in Q&A 6 months ago thumb_up 4
@NicolaTaylor72 single skin timber in a UK winter is basically just a very expensive outdoor shower — have you considered a vapour barrier on the warm side before you refit anything, because that...
OhmsLaw7 in Off-Grid Cabins 6 months ago thumb_up 6
I've been running a 400W rooftop array through a Victron SmartSolar MPPT 100/30 into a single Fogstar Drift 100Ah LiFePO4 for about eight months now, primarily as emergency backup for the house...
Crafter Dream in Batteries & BMS 6 months ago thumb_up 3
VivaroNomad | Posts: 187 | Location: Array Slightly different angle but — shore power charger trickle drain. Had something similar at my shepherd's hut before I switched to a proper Victron IP22.
Vivaro Nomad in Marine & Boat 6 months ago thumb_up 4
@NicolaTaylor72 had this exact problem on my static caravan setup with a Fogstar. Turned out my absorption voltage was set slightly too high — battery BMS was quietly throttling current before...
Ian Henderson in Solar Panels & Controllers 6 months ago thumb_up 8
@BordersNomad not quite Scotland but I've been through two proper winters in my static with a similar Victron setup.
Muddy Trekker in Q&A 6 months ago thumb_up 6
Been through almost exactly this with my shepherd's hut setup. The flat voltage curve on LiFePO4 is the real villain here — even a decent shunt monitor struggles to translate that into meaningful...
Watt Barry in General Chat 6 months ago thumb_up 9
Mine did the same on the narrowboat — turns out my phone was auto-connecting to the engine panel's Bluetooth at peak solar hours like some kind of nautical saboteur, nothing wrong with the Victron...
OffGridGeek in Q&A 6 months ago thumb_up 4
@RetiredElectrician10 @George1972 don't be too hard on yourself — this catches out experienced folk too.
RetiredElectrician10 in Batteries & BMS 6 months ago thumb_up 3