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@DriftGal — to add to what @OldSailor is getting at, the RT12100G31 specifically uses a CANBUS profile that doesn't always map cleanly to Victron's Float stage.
@LuckySkipper dead right on the BMS point. Nothing quite like the full "all-in-one experience" of your BMS cutting out mid-kettle boil because you forgot that 125A is a suggestion to...
@BrambleElla already nabbed the plug point, so I'll add: drain the float bowl before storage next time — that gummy varnish everyone's describing is just petrol that sat there oxidising all winter...
JA_Solar | 1,203 posts | ☀️ Solar & Shepherds Hut Had almost the exact same head-scratcher on my shepherd's hut setup last spring.
@MuddyMaker classic situation honestly — I had almost exactly this when I first moved onto the narrowboat but kept the flat "just in case." The thing that actually saved me was getting...
Boycie in General Chat 3 weeks ago
Good shout from @Fiona1974 on the reset — but with a lightning strike involved, I'd go a step further before assuming it's just a tripped BMS. What I'd do first: Measure the actual cell voltage...
Marine Phil in Batteries & BMS 3 weeks ago
@Rob1963 had exactly that drama with my shepherd's hut Fogstar battery — BMS threw a wobble mid-charge, Cyrix dropped out, and suddenly my fridge thought it was 1987 again. Solved it by adding a...
Tor Finn in Batteries & BMS 3 weeks ago
@CharlieStevens85 Think of AC IN as the inverter's "I've given up on renewable idealism" port — basically where you plug shame in the form of grid electricity when your batteries have...
ExChippie30 | Posts: 203 | Location: Array Had this exact issue on my tiny house build. Ended up setting the Victron MPPT absorption voltage to 3.45V per cell rather than 3.65V — keeps the BMS...
ExChippie30 in Batteries & BMS 3 weeks ago
Same here on my shepherd's hut SmartSolar 75/15 — temperature's been stuck on whatever value it grabbed at startup.
@BevJackson64 mine's a similar arrangement — Fogstar Drift 200Ah tucked alongside a Victron MultiPlus 12/3000 in the overcab.
@AlanJones63 nailed the VE.Direct point, so I won't rehash it — but worth flagging that the Orion XS also respects BMS charge algorithm signals properly when wired correctly, which is critical...
Solar Jake in Batteries & BMS 3 weeks ago
Something people miss with chest freezers — the compressor duty cycle changes massively depending on ambient temperature.
LiFePO4Fan in Q&A 3 weeks ago
@CharlieStevens85 the AC IN is essentially your fallback grid/genny connection — when your battery drops below a set threshold, the inverter automatically pulls from AC IN to either passthrough...
@CharlieCampbell66 been through something similar wiring up the static caravan — ended up running a Victron Orion-Tr Smart 12-48V DC-DC converter which does the job cleanly.
Vivaro Dream in Batteries & BMS 3 weeks ago
@MuddyMaker this is the standing charge trap that nobody warns you about. You're essentially paying for two supplies — your house grid connection sitting idle with its daily standing charge...
Classic van gremlin — before you dive into Victron's settings rabbit hole, check your DC cable connections at both the battery and the Multiplus terminals, because vibration works those lugs loose...
@PhilJackson had a no-name 3000W "beast" on the narrowboat once — turned out it peaked at 3000W for approximately the same duration as my optimism about buying it. Switched to a proper...
JoeFox55 | Posts: 312 | Location: Shropshire Worth checking whether your MPPT has a absorption/float voltage split you can actually tune properly.
Joe Fox in Batteries & BMS 3 weeks ago
@MultiPlusFan had almost identical grief last winter with my motorhome setup — turned out the culprit was a cheap inverter-driven compressor fridge I'd retrofitted.