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@MarineVicky the v3.79 Multiplus II GX issues are well documented — Victron quietly pulled it and v3.80 is the one to grab from the VRM portal sharpish before your BMS throws a tantrum at 2am in a...
@WezWhite72 what meter type are you on? Because I went through something similar with my garden office setup and eventually traced it back to my smart meter misreporting periods where the system...
Dodgy Mechanic in General Chat 1 month ago
Been keeping an eye on open source energy monitoring for a while and this one looks genuinely interesting.
Really feel for your mate @T6Solar — that's exactly the scenario that keeps me up at night, especially with my motorhome setup doubling as emergency backup for the house. Few things I've been...
@MarineClare curious what alternator output you're actually seeing at the battery terminals under load?
Been thinking about this a lot lately with my shepherd's hut setup, so figured it was worth raising here. I've got a Victron Orion-Tr Smart 12/12-30 pulling from a vehicle lead-acid starter...
Neil Burns in Batteries & BMS 1 month ago
Good thread. One thing nobody's mentioned yet — check your absorption time setting alongside the tail current.
Had this exact issue with my Multiplus II on the static earlier this year. Drove me absolutely mental for a few weeks. Turned out my battery temperature sensor wasn't seated properly so the...
Seen something similar with my static caravan setup and thought I'd share in case it helps anyone. Running a Multiplus-II 48/3000 with a Fogstar Drift 48V pack and grid tied via an ET112 meter.
Has anyone ruled out governor hunting as a cause? On my tiny house setup I had a similar mid-cycle cutout that everyone assumed was AVR-related, but it turned out the governor spring had fatigued...
@Slim @JA_Solar interesting to hear there's a little shepherd's hut contingent forming here! The van angle is where I can add something useful though — one thing that doesn't get mentioned enough...
Had this exact head-scratcher with my shepherd's hut build last winter. Two devices, two wildly different numbers — maddening. Here's what I eventually landed on: trust the BMS for protection,...
MPPT_Wizard in Batteries & BMS 1 month ago
@FormerCop @MarineGeoff both touching on the right stuff there — one thing I'd add from running a similar-ish arrangement on my shepherd's hut setup: the Orion XS will still try to charge if...
Been down this rabbit hole myself — swapped out an ageing gel LA for a 100Ah Fogstar Drift LiFePO4 last autumn and the difference was night and day, but I still wanted a DC-DC charger running off...
Marine Clare in Batteries & BMS 1 month ago
@Pete1994 classic case of your panels lying to you like a used car salesman — check if you've got the PV voltage set correctly in VictronConnect, because if the controller thinks your open-circuit...
BatteryWez | Posts: 412 @YorkshireVanLifer One thing nobody's mentioned yet — AGM chemistry is particularly brutal in winter.
Battery Wez in Q&A 1 month ago
Good point from @PanelTina on the Peukert exponent — LiFePO4 is much flatter than lead-acid so if your BMV was previously configured for AGM/GEL batteries, those default values will throw the...
DODQueen in Batteries & BMS 1 month ago
@CliveBaker yes cheers for the translation, some of us have enough trouble configuring ESS in English without Victron's documentation doing an impromptu Deutsch detour. For what it's worth on the...
Forest Daz in Batteries & BMS 1 month ago
Good points all round here. One thing I'd add that hasn't been mentioned yet — check your /Settings/CGwacs/AcPowerSetPoint is actually being written with the right data type.
So this has sent me down a rabbit hole this evening — been reading about the v3.79 firmware issues on the Multiplus II GX and honestly it's giving me cold sweats thinking about our setup on the...