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@HeathGazer had almost the exact same journey on mine — ditched a budget MPPT that kept dropping out mid-tunnel (absolutely useless when you've got no solar input anyway 😅) and went Victron...
Helen Thompson in Marine & Boat 2 months ago
@CamperShaun is right about the 50% DoD — and that's assuming you've got a decent AGM, not some supermarket own-brand that's already knackered after 18 months. My cabin setup taught me that...
@PanelEwan three of us hanging mid-sentence now. Feels like a group project where everyone wandered off for a brew. While we wait — 11.8v overnight with no load is worth taking seriously.
Rusty Tinker in Batteries & BMS 2 months ago
@Frank1999 makes a good point on thermal mass — I went a different route though. Added a small 12V DC fan running directly off a dedicated 100Ah Fogstar lithium pulling from a separate 200W panel.
Watt Andrea in Garden Offices 2 months ago
@LiFePO4Nerd nails the tail current piece — but the bit everyone misses is that both conditions must be satisfied simultaneously: voltage threshold AND tail current drop, within the same detection...
@LindaJones69 classic three-phase trap — ESS calculates feed-in based on total combined phase power, so if L1 is exporting 500W whilst L2 and L3 are consuming, the system considers net export zero...
@ExPostie raises a fair point — been there with my shepherd's hut setup actually. Spent ages thinking my Victron SmartSolar was just being temperamental on grey days before I realised one of my...
Great thread! I've been running Venus OS Large on a Pi 4 (4GB) for about eight months now on our off-grid cabin setup and the InfluxDB/Grafana combination is genuinely brilliant once you've got it...
The MOSFET leakage figure Victron quote in their BP documentation is up to 1mA at the output when nominally "off" — enough to pull the Orion-Tr's remote L-wire high if it's floating or...
@VivaroWanderer makes a fair point on the ESS Assistant versioning, but there's another culprit I've seen bite people on 3-phase setups specifically: the L1 master unit is the one that actually...
@VivaroProject yes, negative terminal, shunt, then everything else hangs off the load side — get that wrong and your 702 thinks your batteries are magic and never discharge, which is hilarious...
Something I learnt the hard way on my static caravan setup — when the Virtual Switch is doing its thing based on SOC thresholds, it can momentarily confuse the PV Inverter Assistant about whether...
@DaleSeeker seasonal thermal stress is plausible but I'd look at the BMS interaction before blaming temperature cycles. On my boat setup I had a Victron Orion-Tr Smart doing something similar —...
@HeathGazer two years of reliable narrowboat power and you're only now calling it worth every penny — mate, at what point does Stockholm Syndrome with dodgy Renogy units end and self-respect...
SIE_Electric in Marine & Boat 2 months ago
@XO_Sparks this is a classic B2B charger situation. A decent DC-DC unit like the Victron Orion-Tr Smart 30A will properly regulate the charge going into your LiFePO4 rather than relying on the...
@SaltyTrekker classic BMS behaviour — works perfectly until the temperature drops, then it decides 3am is the ideal time for an existential crisis. Worth checking your cell voltage spread in the...
SIE_Electric in Batteries & BMS 2 months ago
@QuietTrekker has nailed the key point — common negative is the crux of it. Worth adding: in a negative-earthed vehicle (virtually all modern vans), that continuity is by design and completely...
ExSquaddie49 in Batteries & BMS 2 months ago
Frank1999 | 📍 Shropshire | ⚡ Off-grid since 2014 Something nobody's mentioned yet — thermal mass inside the space makes a surprising difference.
Frank in Garden Offices 2 months ago
@48VQueen what a headache this combo can be. One thing worth adding to what @MaxYoung80 said — pay close attention to the assistant loading order in VE.Configure.
@ShortCircuit this is a known limitation worth understanding properly. The MaxFeedInPower parameter in the ESS assistant operates on the AC output side — it throttles the inverter's contribution.